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Dropdown toggle only picking first value

I have made a dropdown which toggles successfully, but it only seems to pick the first class and when I click the second dropdown it toggles the contents of the first. Is there something I am missing here? Here is my code:
const menuListDropdown = document.querySelectorAll('.menu-block-dropdown');
const menuBlock = document.querySelector('.menu-block');
menuListDropdown.forEach((menuBlockList) => {
menuBlockList.addEventListener('click', function() {
menuBlock.classList.toggle('menu-block-active');
})
})
.menu-block {
background: #fff;
box-shadow: rgba(0, 0, 0, 0.1) 0px 0px 5px 0px, rgba(0, 0, 0, 0.1) 0px 0px 1px 0px;
padding: 15px;
border-radius: 8px;
position: absolute;
top: 35px;
opacity: 0;
transition: 150ms ease;
}
.menu-block-active {
transition: 150ms all;
opacity: 1;
}
.menu-block-list {
display: flex;
flex-direction: column;
gap: 15px;
}
.menu-block-list a {
color: #444444;
margin: 0 0 0.25 0;
padding: 0;
font-weight: 500;
}
<li class="menu-block-dropdown">
Resources
<div class="menu-block">
<div class="menu-block-list">
Dropdown 1
Dropdown 2
</div>
</div>
</li>
<li class="menu-block-dropdown">
Blogs
<div class="menu-block">
<div class="menu-block-list">
Dropdown 3
Dropdown 4
</div>
</div>
</li>

The problem is, you are selecting just one dropdown. So what need to be done is select the dropdown in respect to the Menu Link you clicked.
See the below I've made changes in JS
const menuListDropdown = document.querySelectorAll('.menu-block-dropdown');
// Not needed
// const menuBlock = document.querySelector('.menu-block');
menuListDropdown.forEach((menuBlockList) => {
menuBlockList.addEventListener('click', function() {
// Select the Block within the Target List
const menuBlock = menuBlockList.querySelector(".menu-block");
menuBlock.classList.toggle('menu-block-active');
})
})
.menu-block {
background: #fff;
box-shadow: rgba(0, 0, 0, 0.1) 0px 0px 5px 0px, rgba(0, 0, 0, 0.1) 0px 0px 1px 0px;
padding: 15px;
border-radius: 8px;
position: absolute;
top: 35px;
opacity: 0;
transition: 150ms ease;
}
.menu-block-active {
transition: 150ms all;
opacity: 1;
}
.menu-block-list {
display: flex;
flex-direction: column;
gap: 15px;
}
.menu-block-list a {
color: #444444;
margin: 0 0 0.25 0;
padding: 0;
font-weight: 500;
}
li {
display: inline-block;
}
<li class="menu-block-dropdown">
Resources
<div class="menu-block">
<div class="menu-block-list">
Dropdown 1
Dropdown 2
</div>
</div>
</li>
<li class="menu-block-dropdown">
Blogs
<div class="menu-block">
<div class="menu-block-list">
Dropdown 3
Dropdown 4
</div>
</div>
</li>
Edit: Activate just one Dropdown at a time.
In this case, we need access to all the dropdowns Since, we need to update all their active state. So that only the intended Dropdown is Active at once.
const menuListDropdown = document.querySelectorAll('.menu-block-dropdown');
const menuBlocks = document.querySelectorAll('.menu-block');
menuListDropdown.forEach((menuBlockList) => {
menuBlockList.addEventListener('click', function() {
menuBlocks.forEach((menuBlock) => {
// Active the Dropdown if it's the child of the BlockList Element
if (menuBlockList.contains(menuBlock)) {
menuBlock.classList.toggle('menu-block-active');
} else {
menuBlock.classList.remove('menu-block-active');
}
});
});
});
.menu-block {
background: #fff;
box-shadow: rgba(0, 0, 0, 0.1) 0px 0px 5px 0px, rgba(0, 0, 0, 0.1) 0px 0px 1px 0px;
padding: 15px;
border-radius: 8px;
position: absolute;
top: 35px;
opacity: 0;
transition: 150ms ease;
}
.menu-block-active {
transition: 150ms all;
opacity: 1;
}
.menu-block-list {
display: flex;
flex-direction: column;
gap: 15px;
}
.menu-block-list a {
color: #444444;
margin: 0 0 0.25 0;
padding: 0;
font-weight: 500;
}
li {
display: inline-block;
}
<li class="menu-block-dropdown">
Resources
<div class="menu-block">
<div class="menu-block-list">
Dropdown 1
Dropdown 2
</div>
</div>
</li>
<li class="menu-block-dropdown">
Blogs
<div class="menu-block">
<div class="menu-block-list">
Dropdown 3
Dropdown 4
</div>
</div>
</li>

Local storage data not saving on page refresh

I am creating a settings portion on a website. I want the features chosen to be "saved" and kept when the page refreshes. I attempted this but it seems to just reset the form when I refresh the page. Another issue is when I click on the cancel button, the toggle buttons reset but the dropdown comes back blank instead of going back to the placeholder "select timezone". The issue most likely lies in my javascript code below. It's also throwing an error in stack overflow but works properly on my website (minus the issues described above). Any suggestions would be much appreciated!
// ---------- TOGGLE BTN ----------
const toggle = document.getElementsByClassName("toggle");
const labels = document.getElementsByClassName("labels");
for(let i=0; i < 2; i++) {
labels[i].innerHTML = "OFF";
toggle[i].addEventListener( "click", () => {
if(labels[i].innerHTML == "OFF") {
// console.log("button toggled");
labels[i].classList.add("on");
labels[i].innerHTML= "ON";
} else {
labels[i].classList.remove("on");
labels[i].innerHTML = "OFF";
}
});
}
// ---------- LOCAL STORAGE DATA ----------
const save = document.getElementById("save");
const cancel = document.getElementById("cancel");
const emailBtn = document.getElementById("togBtn");
const publicBtn = document.getElementById("togBtn2");
const zone = document.getElementById("timezone");
// emailBtn.value = data;
// publicBtn.value = data;
// zone.value = data;
const data = {
email: emailBtn.value,
privacy: publicBtn.value,
timezone: zone.value
}
var emailVal = localStorage.getItem("email");
var privacyVal = localStorage.getItem("privacy");
var zoneVal = localStorage.getItem("timezone");
save.addEventListener('click', () => {
localStorage.setItem("email", emailBtn.value);
localStorage.setItem("privacy", publicBtn.value);
localStorage.setItem("timezone", zone.value);
});
cancel.addEventListener('click', () => {
localStorage.clear();
for(let i=0; i < 2; i++) {
labels[i].innerHTML = "OFF";
labels[i].classList.remove("on");
}
emailBtn.checked = false;
publicBtn.checked =false;
zone.value = 'Select Timezone';
});
.settings {
padding-left: 15px;
display: flex;
justify-content: center;
align-items: center;
flex-wrap: wrap;
}
.settings h3 {
flex-basis: 100%;
}
.button1,
.button2 {
flex-basis: 100%;
display: flex;
align-items:center;
}
label {
flex-basis: 90%;
}
input {
flex-basis: 10%;
}
.form-field {
flex-basis: 100%;
background-color: rgb(241, 240, 240);
border: 1px solid lightgrey;
color: grey;
border-radius: 5px;
padding: 10px;
margin: 0 15px 10px 0;
}
.settings-button {
display: flex;
justify-content: center;
}
button {
margin: 10px 15px 10px 0;
padding: 10px;
border: 1px solid lightgrey;
border-radius: 5px;
}
#save,
#cancel {
flex-basis: 50%;
}
#save {
background-color: #7477BF;
color: white;
}
#cancel {
background-color: darkgray;
color: white;
}
#timezone {
margin-top:25px;
}
/* toggle button */
.toggle {
-webkit-appearance: none;
-webkit-tap-highlight-color: transparent;
position: relative;
outline: 0;
cursor: pointer;
margin: 10px 15px;
}
.toggle:after {
content: '';
width: 80px;
height: 28px;
display: inline-block;
background: rgba(196, 195, 195, 0.55);
border: 2px solid rgba(196, 195, 195, 0.55);
border-radius: 18px;
clear: both;
}
.toggle:before {
content: '';
width: 20px;
height: 20px;
display: block;
position: absolute;
top: 3px;
/* left: 0;
top: -3px; */
border: 2px solid rgba(196, 195, 195, 0.55);
border-radius: 50%;
background: rgb(255, 255, 255);
box-shadow: 1px 1px 3px rgba(0, 0, 0, 0.6);
}
.toggle:checked:before {
left: 54px;
box-shadow: -1px 1px 3px rgba(0, 0, 0, 0.6);
}
.toggle:checked:after {
background: #7477BF;
}
.toggle,
.toggle:before,
.toggle:after,
.toggle:checked:before,
.toggle:checked:after {
transition: ease .4s;
-webkit-transition: ease .4s;
-moz-transition: ease .4s;
-o-transition: ease .4s;
}
.labels {
color: gray;
position: relative;
font-size: 15px;
transform: translate(-48px, -3px);
}
.on {
color: white;
transform: translate(-90px, -3px);
}
<section class="settings" id="settings">
<h3>Settings</h3>
<!-- custom CSS toggle code-->
<div class="button1">
<label for="togBtn">Send Email Notfications </label>
<input type="checkbox" class="toggle" id="togBtn">
<span class="labels"></span>
</div>
<div class="button2">
<label for="togBtn2">Set Profile to Public </label>
<input type="checkbox" class="toggle" id="togBtn2">
<span class="labels"></span>
</div>
<select class="form-field" id="timezone">
<option disabled selected>Select a Timezone</option>
<option>Eastern</option>
<option>Western</option>
<!-- more options -->
</select>
<div class="settings-button" >
<button class="button-primary" id="save">Save</button>
<button class="button-disabled" id="cancel">Cancel</button>
</div>
</section>

here a working example.
The problems with your code were that you were using emailBtn.value and publicBtn.value instead of emailBtn.checked and publicBtn.checked (they are checkbox so in order to get the correct value you have to read che checked property) and you were not loading the saved values on document load (the function inside window.addEventListener("load", ...) in my example.
Hope this helps you.

CSS clip path issue with background

I'm currently implementing a switch. The problem is that the background which should be hidden by the switch shows one thin line at the left end. I've absolutely no idea why. The strange thing is that here on SO everything looks really good. The switch is located in a scrollable main wrapper with all the other content. I thought this could be the problem but after removing the scrolling, the error was still there:
When I run the inspector and hover the element, the background seems to go out:
This is my code. I've tried a low but can't find the problem:
let toggle = document.getElementById('container');
let toggleContainer = jQuery('#toggle-container');
let toggleNumber;
jQuery('#container').click( function() {
toggleNumber = !toggleNumber;
if (toggleNumber) {
toggleContainer.css( "clip-path", "inset(0 0 0 50%)" );
} else {
toggleContainer.css( "clip-path", "inset(0 50% 0 0)" );
}
});
#container {
width: 100%;
height: 56px;
margin-bottom: 20px;
position: relative;
overflow: hidden;
user-select: none;
cursor: pointer;
border-radius: 3px;
-webkit-box-shadow: 0 0.2rem 0.4rem 0 rgba(0, 0, 0, .2);
box-shadow: 0 0.12rem 0.4rem 0 rgba(0, 0, 0, .2);
}
.inner-container {
position: absolute;
left: 0;
top: 0;
width: 100%;
height: 100%;
text-transform: uppercase;
}
.inner-container:first-child {
background: gray;
color: #ffffff;
}
.inner-container:nth-child(2) {
background: chartreuse;
color: #ffffff;
clip-path: inset(0 50% 0 0);
-webkit-transition: 0.2s;
-o-transition: 0.2s;
transition: 0.2s;
}
.toggle {
width: 50%;
position: absolute;
height: inherit;
display: flex;
font-weight: 600;
}
.toggle p {
margin: auto;
}
.toggle:nth-child(1) {
right: 0;
}
<script src="https://cdnjs.cloudflare.com/ajax/libs/jquery/3.3.1/jquery.min.js"></script>
<div id="container">
<div class="inner-container">
<div class="toggle">
<p>Private</p>
</div>
<div class="toggle">
<p>Public</p>
</div>
</div>
<div class="inner-container" id='toggle-container'>
<div class="toggle">
<p>Private</p>
</div>
<div class="toggle">
<p>Public</p>
</div>
</div>
</div>

I would suggest an optimized version with less of code and without the use of clip-path:
let toggle = document.getElementById('container');
let toggleContainer = jQuery('.inner-container');
jQuery('#container').click(function() {
toggleContainer.toggleClass('second');
});
#container {
margin-bottom: 20px;
user-select: none;
cursor: pointer;
border-radius: 3px;
box-shadow: 0 0.12rem 0.4rem 0 rgba(0, 0, 0, .2);
}
.inner-container {
height: 56px;
text-transform: uppercase;
display: flex;
background:
linear-gradient(chartreuse,chartreuse) left/50% 100% no-repeat,
gray;
color: #ffffff;
transition: 0.2s;
}
.inner-container.second {
background-position:right;
}
.toggle {
width: 50%;
display: flex;
font-weight: 600;
}
.toggle p {
margin: auto;
}
<script src="https://cdnjs.cloudflare.com/ajax/libs/jquery/3.3.1/jquery.min.js"></script>
<div id="container">
<div class="inner-container">
<div class="toggle">
<p>Private</p>
</div>
<div class="toggle">
<p>Public</p>
</div>
</div>
</div>

This seems to be what you are seeing:
Which was done by making the CSS: clip-path: inset(0 50% 0 1px);
Maybe just try adding some negative space to the left side:
toggleContainer.css( "clip-path", "inset(0 50% 0 -10px)" );

Elements not visible on page

I moved a page from my old site to my new one, and cannot for the life of me figure out why the CSS isn't working.
https://ericaheinz.com/art/turrell/
It should have 5 concentric white ovals in the middle. I've inspected everything, the divs and CSS are there but they won't show up.
Here's the JS/CSS/HTML
// color looping
// http://forrst.com/posts/Endlessly_Looping_Background_Color_jQuery_Functi-ey7
var colors = new Array('#077bf4', '#9554d6', '#e62e5c', '#ff9466', '#CCCCCC', '#ffbe0a', '#46b3f2', '#70dab3', '#af93af', '#e51717', '#ffd1d9');
var color_index = 0;
var interval = 3000;
function bg_color_tween() {
$('body').animate({ backgroundColor: colors[color_index] }, interval, 'linear', function() {
if(color_index === colors.length) { color_index = 0; }
else { color_index++; }
bg_color_tween();
});
}
// rotation
$(document).ready(function() {
bg_color_tween();
$('.turrell').each(function(){
var r=Math.floor(Math.random()*90);
$('.carton').css({
'-moz-transform':'rotate('+r+'deg)',
'-webkit-transform':'rotate('+r+'deg)',
'transform':'rotate('+r+'deg)'
});
var t=Math.floor(Math.random()*10)+2;
var l=Math.floor(Math.random()*7)+3;
$('.egg').css({
'top':t+'%',
'left':l+'%'
});
});
});
.carton {
height: 95%;
width: 90%;
margin-left: 10%;
text-align: center;
position: relative;
z-index: -10;
}
.egg {
height: 76%;
width: 80%;
position: relative;
top: 12%;
left: 10%;
border-radius: 50%;
background: rgba(255, 255, 255, 0.4);
-moz-box-shadow: inset 0 0 40px rgba(255, 255, 255, 0.4);
-webkit-box-shadow: inset 0 0 40px rgba(255, 255, 255, 0.4);
box-shadow: inset 0 0 40px rgba(255, 255, 255, 0.4);
color: #FFF;
}
.art-caption {
position: absolute;
bottom: 20px;
left: 3.5%;
text-transform: uppercase;
letter-spacing: 1px;
font-size: 11px;
line-height: 13px;
margin: 0;
padding: 0;
}
.art-caption a {
color: #FFF;
opacity: .3;
transition: all 0.25s ease-in-out;
}
.art-caption a:hover {
opacity: .8;
}
<body class="turrell">
<div class="container">
<div class="carton">
<div class="egg">
<div class="egg">
<div class="egg">
<div class="egg">
<div class="egg">
<!-- THE LIGHT -->
</div>
</div>
</div>
</div>
</div>
</div>
<h6 class="art-caption">Homage to <em>Aten Reign</em> by James Turrell</h6>
</div>
</body>

You're missing "height" attributes in html, body and .container div. If you inspect, they had height 0 which simply do not display them.
If i added height: 100% to all of them, this is what i saw:

Javascript Stop Propagation

I have been trying to figure out how to get an index of a dynamically created element so that I can write a function to delete it (splice).
I have figured out how to get the index really manually, but the problem is that I am getting Propagation from my event delegation and I am not sure how to stop it.
I have tried putting stopPropagation(), preventDefault(), stopImmediatePropagation() at various points within the function and have spent the last hour reading around online trying to figure out how to stop it. I even tried setting the e.bubble to false with no avail.
Could someone point me in the right direction here? Im sure its my inexperience but I am just out of ideas as of now.
// Title of Question Set
const title = document.querySelector(".input_title-input");
// Array of Questions
const questions = [];
let chosen = [];
// Selected Question
let qChosen = [];
// Toggles if a new question is selected
let toggle = 0;
// Selecting Inputs and Button
let question = document.querySelector(".input_question-input");
let answer = document.querySelector(".input_answer-input");
let submit = document.querySelector(".input_submit-button");
let display = document.querySelector(".input_display");
let card = document.querySelector(".card_container");
let start = document.querySelector(".input_start-btn");
let guessInput = document.querySelector(".guess_input");
let submitGuess = document.querySelector(".submitGuess");
let nextQuestion = document.querySelector(".nextQuestion");
// Select all display items
let displayItems = document.getElementsByClassName("input_display-item");
// Select P quiz card values
let cardQuestion = document.querySelector(".quiz_question");
let cardAnswer = document.querySelector(".quiz_answer");
// Event Listener on Submit Button for Display Items Idividually
submit.addEventListener("click", function() {
if (question.value === "") {
question.classList.toggle("error");
answer.classList.toggle("error");
} else {
createObj();
let trashCan = createDisplayItem();
trashCan.addEventListener("click", function(e) {
console.log(this.parentNode);
console.log(questions);
console.log(e);
this.parentNode.remove();
});
inputReset();
toggle = questions.length;
start.removeAttribute("disabled");
}
});
start.addEventListener("click", function() {
console.log("clicked");
generateCard();
});
// Event Listener to test if guess is correct
submitGuess.addEventListener("click", function() {
if (guessInput.value.toLowerCase() === qChosen.answer.toLowerCase()) {
card.classList.toggle("flip");
submitGuess.disabled = true;
} else {
console.log("wrong or not working");
}
});
nextQuestion.addEventListener("click", function() {
card.classList.toggle("flip");
submitGuess.disabled = false;
setTimeout(generateCard, 1000);
});
// Create The object for inclusion to array
function createObj() {
let obj = {};
obj.question = question.value;
obj.answer = answer.value;
questions.push(obj);
}
// Resets inputs to blank after submit
function inputReset() {
question.value = "";
answer.value = "";
if (question.classList.contains("error")) {
question.classList.toggle("error");
answer.classList.toggle("error");
}
}
// Creates Each Display Item
function createDisplayItem() {
// Create new Div
let newUl = document.createElement("ul");
// Create Li and Image Elements
let liQuestion = document.createElement("li");
let liAnswer = document.createElement("li");
let trashCan = document.createElement("img");
// Set img src
trashCan.src = "../assets/trash.svg";
// Set classes
newUl.className = "input_display-item";
liQuestion.className = "input_display-question";
liAnswer.className = "input_display-answer";
trashCan.className = "input_display-delete";
// Set LI textContent
liQuestion.textContent = question.value;
liAnswer.textContent = answer.value;
// Append Children
display.appendChild(newUl);
newUl.appendChild(liQuestion);
newUl.appendChild(liAnswer);
return newUl.appendChild(trashCan);
}
//Generating Card Information per question
function generateCard() {
random();
if (toggle < 0) {
cardQuestion.textContent = "There are no more questions left";
cardAnswer.textContent = "There are no more questions left";
} else {
cardQuestion.textContent = qChosen.question;
cardAnswer.textContent = qChosen.answer;
}
}
// Choses a random value for the selection set
function random() {
if (questions.length === 0) {
toggle = -1;
} else {
let num = Math.floor(Math.random() * questions.length);
chosen = questions.splice(num, 1).concat(chosen);
qChosen = chosen[0];
}
}
// Notes
// I need to create a function that upon submit of a guess, checks its value against the answer textContent.
// I will likely need to make the text lowercase for the check to just make sure that they match exactly and that a capital letter wont create a false when its true.
/** Variables
---------------------------------------------------------*/
/** Reset
---------------------------------------------------------*/
* {
margin: 0;
padding: 0; }
*,
*::before,
*::after {
box-sizing: inherit; }
html {
box-sizing: border-box;
font-size: 62.5%; }
body {
font-weight: 400;
line-height: 1.5;
font-size: 2rem;
background-color: #bdbdc7; }
/** Primary Container
---------------------------------------------------------*/
.container {
max-width: 180rem;
display: flex; }
.flex {
display: flex;
justify-content: center;
align-items: center; }
.visible {
visibility: hidden; }
/** Input Section
---------------------------------------------------------*/
input[type="text"] {
padding: 0.5rem;
width: auto;
min-width: 100%;
line-height: 2rem; }
.input {
width: 40rem;
height: 100%;
padding: 1rem;
background-color: #ccc;
display: flex;
align-items: flex-start;
flex-direction: column; }
.input_title {
width: 100%;
display: flex;
flex-direction: column; }
.input_title-label {
display: flex;
justify-content: center; }
.input_title-input {
padding: 0.5rem; }
.input_question {
width: 100%;
display: flex;
flex-direction: column; }
.input_question-label {
display: flex;
justify-content: center; }
.input_question-input {
padding: 0.5rem; }
.input_answer {
width: 100%;
display: flex;
flex-direction: column; }
.input_answer-label {
display: flex;
justify-content: center; }
.input_answer-input {
padding: 0.5rem; }
.input_question-input.error, .input_answer-input.error {
border: 2px red solid; }
.input_submit {
width: 100%; }
.input_submit-button {
margin-top: 1rem;
padding: 0 1.5rem; }
.input_start {
width: 100%; }
.input_display {
width: 100%;
font-size: 1.5rem;
padding: 2rem 0 1rem 0; }
.input_display-item {
margin-bottom: 1rem;
padding: .2rem 2rem;
text-transform: capitalize;
background-color: #fff;
border-radius: 1rem;
list-style: none;
display: flex;
justify-content: space-between;
align-items: center; }
.input_display-item:nth-child(odd) {
background-color: #aaa;
border-radius: 1rem; }
.input_display-delete {
height: 1.8rem;
width: 1.8rem; }
.input :not(.input_display) div {
padding-bottom: 2rem; }
/** Quiz Card
---------------------------------------------------------*/
.card {
display: flex;
justify-content: center;
align-items: center;
width: 100%; }
.card_container {
transform-style: preserve-3d;
perspective: 1000px;
width: 60rem;
margin: 1rem;
cursor: pointer; }
.card_container .front {
transform: rotateY(0deg);
transform-style: preserve-3d; }
.card_container .front:after {
position: absolute;
top: 0;
left: 0;
z-index: 1;
width: 100%;
height: 100%;
content: "";
display: block;
opacity: 0.6;
background-color: #000;
backface-visibility: hidden;
border-radius: 10px; }
.card_container .back {
position: absolute;
top: 0;
left: 0;
width: 100%;
background-color: #cedce7;
background: linear-gradient(45deg, #dedce7 0%, #596a72 100%);
transform: rotateY(180deg);
transform-style: preserve-3d; }
.card_container .front,
.card_container .back {
background-color: red;
background-size: cover;
background-position: center;
transition: transform 0.7s cubic-bezier(0.4, 0.2, 0.2, 1);
transition: transform 0.7s cubic-bezier(0.4, 0.2, 0.2, 1);
backface-visibility: hidden;
text-align: center;
min-height: 500px;
height: auto;
border-radius: 10px;
color: #fff;
font-size: 1.5rem; }
.flip {
transition: transform 0.7s cubic-bezier(0.4, 0.2, 0.2, 1);
transition: transform 0.7s cubic-bezier(0.4, 0.2, 0.2, 1); }
.flip .back {
transform: rotateY(0deg);
transform-style: preserve-3d; }
.flip .front {
transform: rotateY(-180deg);
transform-style: preserve-3d; }
.inner {
transform: translateY(-50%) translateZ(60px) scale(0.94);
top: 50%;
position: absolute;
left: 0;
width: 100%;
padding: 2rem;
box-sizing: border-box;
outline: 1px solid transparent;
perspective: inherit;
z-index: 2; }
.front .inner p {
font-size: 2rem;
margin-bottom: 2rem;
position: relative; }
.card_container-guess {
padding-top: 2rem; }
.card_container-guess .guess_input {
width: 2rem;
margin: 1rem auto;
padding: 1rem;
border-radius: 1rem;
box-shadow: inset 0 1px 2px rgba(0, 0, 0, 0.55), 0px 1px 1px rgba(255, 255, 255, 0.5);
border: 1px solid #666;
opacity: 0.6; }
.card_container-guess .guess_input:hover, .card_container-guess .guess_input:focus {
opacity: .8;
color: #08c;
box-shadow: 0px 1px 0px rgba(255, 255, 255, 0.25), inset 0px 3px 6px rgba(0, 0, 0, 0.25); }
.btnNew {
height: 5rem;
width: 12rem;
margin: 1.5rem 3rem 1rem 0;
font-weight: 700;
color: #333;
background-image: linear-gradient(top, #f4f1ee, #fff);
box-shadow: 0px 8px 30px 1px rgba(0, 0, 0, 0.3), inset 0px 4px 1px 1px white, inset 0px -3px 1px 1px rgba(204, 198, 197, 0.5);
border-radius: 5%;
position: relative;
transition: all .1s linear;
outline: none; }
.btnNew:after {
color: #e9e6e4;
content: "";
display: block;
font-size: 30px;
height: 3rem;
text-decoration: none;
text-shadow: 0px -1px 1px #bdb5b4, 1px 1px 1px white;
position: absolute;
width: 3rem; }
.btnNew:hover {
background-image: linear-gradient(top, #fff, #f4f1ee);
color: #0088cc; }
.btnNew:active {
background-image: linear-gradient(top, #efedec, #f7f4f4);
box-shadow: 0 3px 5px 0 rgba(0, 0, 0, 0.4), inset opx -3px 1px 1px rgba(204, 198, 197, 0.5);
outline: none; }
.btnNew:active:after {
color: #dbd2d2;
text-shadow: 0px -1px 1px #bdb5b4, 0px 1px 1px white;
outline: none; }
<html lang="en">
<head>
<meta charset="UTF-8">
<meta name="viewport" content="width=device-width, initial-scale=1.0">
<meta http-equiv="X-UA-Compatible" content="ie=edge">
<title>Flash</title>
<!-- Custom CSS -->
<link rel="stylesheet" href="css/main.css">
</head>
<body>
<div class="container">
<section class="input">
<div class="input_title">
<label class="input_title-label" for="title">Enter a Title</label>
<input class="input_title-input" id="title" type="text" placeholder="List of Towels">
</div>
<div class="input_question">
<label class="input_question-label" for="question">Enter a Question</label>
<input class="input_question-input" id="question" type="text" placeholder="What is 42?">
</div>
<div class="input_answer">
<label class="input_answer-label" for="answer">Enter an Answer</label>
<input class="input_answer-input" id="answer" type="text" placeholder="The Meaning Life, Universe, and Everything">
</div>
<div class="input_submit flex">
<button class="input_submit-button btnNew">Submit</button>
</div>
<div class="input_display"></div>
<div class="input_start flex">
<button type="button" class="input_start-btn btnNew" disabled>Start Quiz</button>
</div>
</section>
<section class="card">
<div class="card_container">
<div class="front">
<div class="inner">
<p class="quiz_question">Question</p>
</div>
</div>
<div class="back">
<div class="inner">
<p class="quiz_answer">Answer</p>
</div>
</div>
<div class="card_container-guess">
<input type="text" class="guess_input">
<button class="submitGuess btnNew">Submit Guess</button>
<button class="nextQuestion btnNew">Next Question</button>
</div>
</div>
</section>
</div>
<!-- Custom JS -->
<script src="js/scripts.js"></script>
</body>
</html>

I am wanting to figure out how to delete an item from the list
How about we change the last line of the function createDisplayItem to ..
function createDisplayItem(){
...
return newUl.appendChild(trashCan) // Added return
}
Now, you have an instance of the newly created trash can element being returned to the calling code, so now all we have to do is add a click event to this specific trash can element and let it delete its parent ul ..
submit.addEventListener("click", function() {
...
let trashCan = createDisplayItem();
trashCan.addEventListener('click', function(){
confirm('Are you sure you want to delete this?')
&& this.parentNode.remove()
})
...
});
So, since now in this code, each trash can takes care of its own parent element, you do not have to worry about finding the index from the parent display element anymore.