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How to create custom radio buttons that can pick only one choice

I have created custom radio buttons using HTML, CSS, JS.
Now, it can pick multiple choices at one time like 2, 3, or 4 choices. What I want to do is to only pick one choice at a time.
And, I want to know if there is a way, instead of adding multiple ::after with the same values for all divs, can I add one ::after for all 4 divs.
let mainBtns = document.querySelectorAll('#container');
mainBtns.forEach(btn => {
btn.addEventListener('click', () => {
btn.classList.toggle('active');
});
});
.main {
display: flex;
justify-content: center;
align-items: center;
height: 100vh;
gap: 20px;
}
.first, .second, .third, .forth {
display: flex;
place-content: center;
place-items: center;
width: 100px;
height: 100px;
border-radius: 50%;
background-color: rgb(202, 202, 202);
cursor: pointer;
position: relative;
box-shadow: 0 0 6px 1px #e8eef6;
}
.first::after {
content: '';
height: 70px;
width: 70px;
border-radius: 50%;
background-color: rgb(78, 78, 78);
position: absolute;
vertical-align: middle;
visibility: hidden;
}
.second::after {
content: '';
height: 70px;
width: 70px;
border-radius: 50%;
background-color: rgb(78, 78, 78);
position: absolute;
visibility: hidden;
}
.third::after {
content: '';
height: 70px;
width: 70px;
border-radius: 50%;
background-color: rgb(78, 78, 78);
position: absolute;
visibility: hidden;
}
.forth::after {
content: '';
height: 70px;
width: 70px;
border-radius: 50%;
background-color: rgb(78, 78, 78);
position: absolute;
visibility: hidden;
}
.active::after {
visibility: visible;
}
.deActive::after {
visibility: hidden;
}
<div class="main">
<div id="container" class="first"></div>
<div id="container" class="second"></div>
<div id="container" class="third"></div>
<div id="container" class="forth"></div>
</div>

The default behavior of HTML <input type="radio"> is already what you want. You can directly style them with CSS.
.main {
display: flex;
justify-content: center;
align-items: center;
height: 100vh;
gap: 20px;
}
.main>input {
appearance: none;
position: relative;
width: 100px;
height: 100px;
border-radius: 50%;
background-color: rgb(202, 202, 202);
cursor: pointer;
box-shadow: 0 0 6px 1px #e8eef6;
}
.main>input::after {
content: '';
position: absolute;
top: 15px;
left: 15px;
height: 70px;
width: 70px;
border-radius: 50%;
background-color: rgb(78, 78, 78);
visibility: hidden;
}
.main>input:checked::after {
visibility: visible;
}
<div class="main">
<input type="radio" id="apple" name="fruit" value="apple" checked>
<input type="radio" id="orange" name="fruit" value="orange">
<input type="radio" id="banana" name="fruit" value="banana">
</div>

To avoid repeating ::after for each button you can use element > element selector;
And for picking one choice at a time, you need to reset the class name of the buttons (remove active class name from all buttons) then add active to the selected one
const mainBtns = document.querySelectorAll(".btn");
mainBtns.forEach(btn => {
btn.addEventListener("click", () => {
if (btn.classList.contains("active")) return btn.classList.remove("active");
mainBtns.forEach(btn => (btn.className = "btn"));
btn.classList.add("active");
});
});
.main {
display: flex;
justify-content: center;
align-items: center;
height: 100vh;
gap: 20px;
}
.main>div {
display: flex;
place-content: center;
place-items: center;
width: 100px;
height: 100px;
border-radius: 50%;
background-color: rgb(202, 202, 202);
cursor: pointer;
position: relative;
box-shadow: 0 0 6px 1px #e8eef6;
}
.main>div::after {
content: "";
height: 70px;
width: 70px;
border-radius: 50%;
background-color: rgb(78, 78, 78);
position: absolute;
vertical-align: middle;
visibility: hidden;
}
.main>.active::after {
visibility: visible;
}
<div class="main">
<div class="btn"></div>
<div class="btn"></div>
<div class="btn"></div>
<div class="btn"></div>
</div>

You cant use id property for multiple elements
And for your Code
You can modify your code like this
HTML
<div id="custom-radio-button" class="main">
<div class="first" onclick="selectMe(this)"></div>
<div class="scond" onclick="selectMe(this)"></div>
<div class="third" onclick="selectMe(this)"></div>
<div class="forth" onclick="selectMe(this)"></div>
</div>
CSS
.first::after,
.scond::after,
.third::after,
.forth::after {
content: '';
height: 70px;
width: 70px;
border-radius: 50%;
background-color: rgb(78, 78, 78);
position: absolute;
vertical-align: middle;
visibility: hidden;
}
JavaScript
let mainBtns = document.getElementById("custom-radio-button").children
function selectMe(element) {
for (let index = 0; index < mainBtns.length; index++) {
if (mainBtns[index] === element) {
mainBtns[index].classList.add("active")
} else {
mainBtns[index].classList.remove("active")
}
}
}

Functionality already exists in html, you can customize them with css.
.container {
width: 50%;
height: 300px;
text-align: center;
margin: auto;
display: flex;
align-items: center;
justify-content: space-evenly;
}
.container [type="radio" i] {
transform: scale(1);
appearance: none;
width: 50px;
height: 50px;
border-radius: 50%;
border: 25px solid #999;
}
.container [type="radio" i]:checked {
border: 8px solid #999;
background-color: #000;
}
<div class="container">
<input type="radio" name="radio-group">
<input type="radio" name="radio-group">
<input type="radio" name="radio-group">
<input type="radio" name="radio-group">
</div>

Container with Image & Image Description to be Responsive

I am trying to create this simple landing page where there is one row, which contains two <div class="image">, which are container div's which hold the image, the image title, and the image description.
I am trying to get it to be responsive so that when a user on mobile device access the page, the two images will be on one column as opposed to one row. I have started over and over adjusting CSS trying to get what I want, and the closest I have gotten is the example provided in the below snippet.
CSS Stylings I have tried but failed:
#media (min-width: ){} to change max/min size when the screen goes above/below certain pixels
Set a minimum size for the image itself
Tried the same for the container of the image
I couldn't get any of the above to make my landing page responsive.
.container1 {
display: flex;
justify-content: center;
position: relative;
margin-left: 160px;
margin-right: 180px;
}
.container1 p {
text-align: center;
margin: 0;
padding-top: -10px;
}
.container1 h3 {
margin: 10px;
padding: 0;
}
.armycontracts {
width: 100%;
text-align: center;
padding-left: 20px;
}
.armycontracts h3 {
font-size: 15px;
font-weight: bold;
}
.usmccontracts h3 {
font-size: 15px;
font-weight: bold;
}
.usmccontracts {
width: 100%;
margin: 0 auto;
text-align: center;
}
.landinghead {
text-align: center;
font-size: 25px;
font-weight: bold;
}
.projectInfo {
text-align: center;
font-size: 15px;
margin-top: 0px;
}
#contentRow {
margin-top: -50px;
}
.container {
display: flex;
justify-content: center;
position: relative;
}
.ms-core-pageTitle {
display: none;
}
.row-one {
width: 100%;
text-align: center;
padding: 20px;
}
#media (min-width: 400px) {
.row-one {
display: flex;
justify-content: center;
}
}
.image {
position: relative;
width: 100%;
max-width: 400px;
min-width: 200px;
min-height: auto;
margin-left: 40px;
margin-right: 40px;
padding: 20px;
height: auto;
}
.image__img {
display: block;
width: 100%;
height: 100%;
border-radius: 5px;
}
.image__overlay {
position: absolute;
top: 0;
left: 0;
width: 400px;
height: 100%;
background: rgba(0, 0, 0, 0.6);
color: #ffffff;
font-family: 'Quicksand', sans-serif;
display: flex;
flex-direction: column;
align-items: center;
justify-content: center;
opacity: 0;
transition: opacity 0.25s;
border-radius: 0px;
}
.image__overlay>* {
transform: translateY(20px);
transition: transform 0.25s;
}
.image__overlay:hover {
opacity: 1;
}
.image__overlay:hover>* {
transform: translateY(0);
}
.image__title {
font-size: 2em;
font-weight: bold;
}
.image__description {
font-size: 1.25em;
margin-top: 0.25em;
}
#contentRow {
overflow-y: hidden;
}
#sideNavBox {
DISPLAY: none
}
#contentBox {
margin-left: 0px
}
#particles-js {
position: absolute;
width: 100%;
height: 100%;
z-index: -1;
background-color: #ffffff;
background-image: url("");
background-repeat: no-repeat;
background-size: cover;
background-position: 50% 50%;
}
<head>
<meta charset="UTF-8">
<meta name="viewport" content="width=device-width, initial-scale=1.0">
<title>Projects Landing Page</title>
</head>
<script src="https://cdn.jsdelivr.net/particles.js/2.0.0/particles.min.js"></script>
<div id="particles-js"></div>
<body>
<h3 class="landinghead">Projects Landing Page</h3>
<p class="projectInfo">Here you will find a collection of Active/Ongoing Projects</p>
<div class="row-one">
<div class="image">
<a href="https://www.google.com" target="_blank">
<img class="image__img" src="https://api.army.mil/e2/c/images/2021/01/26/4c5cde5d/max1200.jpg" alt="Army" />
<div class="image__overlay">
<div class="image__title">Team 1 Contracts</div>
<p class="image__description">
- Contr. 1 <br>
- Contr. 2 <br>
- Contr. 3 <br>
</p>
</div>
</a>
</div>
<div class="image">
<a href="https://www.google.com" target="_blank">
<img class="image__img" src="https://media.defense.gov/2021/Feb/01/2002574582/-1/-1/0/210124-M-WH885-1032.JPG" alt="Usmc" />
<div class="image__overlay">
<div class="image__title">Team 2 Contracts</div>
<p class="image__description">
- Contr. 1 <br>
- Contr. 2 <br>
- Contr. 3
</p>
</div>
</a>
</div>
</div>
</body>

.row-one{
width: 80%;
text-align: center;
padding: 20px;
display: flex;
flex-wrap: wrap;
justify-content: center;
align-items: center;
}
.image{
flex: 1 45%;
position: relative;
width: 100%;
max-width: 400px;
min-width: 200px;
margin-left: 40px;
margin-right: 40px;
padding: 20px;
height: auto;
}
This works. JSFiddle

You can use 'flex-direction' to achieve what you want.
This page has pretty good information about it.
https://css-tricks.com/almanac/properties/f/flex-direction/
Apply a flex-direction to your 'row-image' class. Set it to 'column' when you want your elements to stack, set it to 'row' when the elements should flow in a line.

Connecting two divs with a circle at the line's end

I am creating some cards that are to display a kind of timeline, and I want to do that by having some card divs with content that are connected with a line and with a circle at each of the ends of the line to make it look good. Currently I just have the cards, and I cannot figure out how to make the connected lines. I currently have something like this:
HTML:
<div class="card-wrapper">
<div class="card">
</div>
<div class="card">
</div>
</div>
CSS:
.card-wrapper {
display: flex;
align-items: center;
align-content: center;
flex-direction: row;
}
.card {
width: 15rem;
height: 25rem;
background-color: #4090ff;
display: flex;
flex-direction: row;
align-items: center;
justify-content: center;
margin: 2rem 4rem;
box-shadow: 0.5rem 0.5rem 3rem rgba(0, 0, 0, 0.3);
}
JSFiddle: https://jsfiddle.net/L3h9xe5d/10/
And I want something like this:

Please follow the above steps..
HTML
<div class="card-wrapper">
<div class="card">
<div class="card-inner"></div>
</div>
<div class="card">
<div class="card-inner"></div>
</div>
<div class="card">
<div class="card-inner"></div>
</div>
<div class="card">
<div class="card-inner"></div>
</div>
</div>
css
.card-wrapper {
display: flex;
align-items: center;
align-content: center;
flex-direction: row;
}
.card {
width: 15rem;
height: 25rem;
background-color: #4090ff;
display: flex;
flex-direction: row;
align-items: center;
justify-content: center;
margin: 2rem 4rem;
box-shadow: 0.5rem 0.5rem 3rem rgba(0, 0, 0, 0.3);
position: relative;
}
.card::after {
position: absolute;
right: -20px;
top: 50%;
transform: translateY(-50%);
width: 26px;
height: 26px;
background-color: #4090ff;
border-radius: 50%;
border: 6px solid #fff;
content: "";
}
.card::before {
position: absolute;
left: -20px;
top: 50%;
transform: translateY(-50%);
width: 26px;
height: 26px;
background-color: #4090ff;
border-radius: 50%;
border: 6px solid #fff;
content: "";
z-index: 9;
}
.card:first-child::before,
.card:last-child::after,
.card:first-child .card-inner::before,
.card:last-child .card-inner::after {
display: none;
}
.card-inner {
width: 100%;
height: 100%;
}
.card-inner::after {
position: absolute;
right: -65px;
top: 50%;
transform: translateY(-50%);
background-color: #000;
content: "";
width: 65px;
height: 4px;
}
.card-inner::before {
position: absolute;
left: -65px;
top: 50%;
transform: translateY(-50%);
background-color: #000;
content: "";
width: 65px;
height: 4px;
}

CSS: responsive design, position card to fit in the middle any size of screen

I have this piece of code that has the profile card in the middle of screen regardless what the screen size is. It often appears too small for any type of screen. How can I position the profile card to almost fill the screen?
#import url("https://fonts.googleapis.com/css?family=Montserrat");
#import url("https://fonts.googleapis.com/css?family=Open+Sans");
body, html {
width: 100%;
height: 100%;
font-family: "Montserrat";
color: #303633;
background-color: #C8D9E7;
overflow: hidden;
font-size: 1em;
font-style: normal;
-webkit-appearance: none;
outline: none;
text-rendering: geometricPrecision;
perspective: 1000px;
}
a {
position: relative;
display: inline-block;
padding: 12px 35px;
margin: 0 0 20px;
background-color: #e1306c;
color: white;
border-radius: 5px;
transition: all 0.3s;
letter-spacing: 2px;
font-size: 0.85em;
font-weight: 700;
text-decoration: none;
text-transform: uppercase;
box-shadow: 0 2px 30px rgba(225, 48, 108, 0.4);
}
a:hover {
background-color: #e75d8c;
}
.content-wrapper {
width: 300px;
max-height: 530px;
border-radius: 5px;
box-shadow: 0 2px 30px rgba(0, 0, 0, 0.2);
background: #fbfcee;
position: absolute;
top: 50%;
left: 50%;
transform: translate(-50%, -50%);
overflow-y: scroll;
overflow-x: hidden;
text-align: center;
}
.content-wrapper .img {
width: 302px;
height: 350px;
position: relative;
overflow: hidden;
}
.content-wrapper img {
/*
position: absolute;
top: 50%;
left: 50%;
transform: translate(-50%, -50%);
width: 100%;
object-fit: contain;
*/
width: 100%;
height: 100%;
object-fit: cover;
}
.profile--info {
text-align: left;
padding-top: 10px;
}
.profile--info span {
font-family: "Open Sans", "Adobe Blank";
z-index: 1;
left: 15px;
top: 15px;
font-size: 0.575em;
color: rgba(84, 95, 89, 0.75);
display: block;
}
.profile--info span.username {
font-weight: 700;
font-style: normal;
font-size: 1em;
color: black;
}
.profile--info span.userquote {
margin-top: -15px;
font-size: 0.7em;
color: rgba(84, 95, 89, 0.75);
}
.user {
background-color: white;
width: 100%;
margin-top: 0;
max-height: 600px;
position: relative;
padding: 0 30px;
box-sizing: border-box;
}
.user-social-wrapper {
display: flex;
justify-content: space-around;
position: relative;
padding: 5px 0;
padding-bottom: 15px;
}
.user-social-wrapper .user-info {
display: flex;
justify-content: center;
align-items: center;
flex-direction: column;
font-weight: 200;
flex: 1 1;
}
.user-social-wrapper .user-info span:first-child {
font-size: 1.25em;
}
.user-social-wrapper .user-info span:last-child {
font-size: 0.75em;
color: rgba(84, 95, 89, 0.75);
}
.shots {
width: calc(100% + 60px);
margin-left: -30px;
position: relative;
display: flex;
flex-wrap: wrap;
}
.shots .shot {
overflow: hidden;
position: relative;
width: 100px;
height: 100px;
}
.shots .shot img {
transition: all 0.255s;
width: 102px;
}
<div class="content-wrapper">
<div class="user">
<div class="shots">
<div class="shot"><img src="https://scontent-icn1-1.cdninstagram.com/vp/fcc951ea7fb4756657e6a7d042bf28f3/5CB41E95/t51.2885-15/e35/44305549_353634695394272_4379074065337998962_n.jpg?_nc_ht=scontent-icn1-1.cdninstagram.com&se=7&ig_cache_key=MTkxMjA0MDQ0OTAyMTY1Njc4Mg%3D%3D.2"></div>
<div class="shot"><img src="https://scontent-icn1-1.cdninstagram.com/vp/cc7f49ae37334eff4a2e844ffbebaa21/5CB841C6/t51.2885-15/e35/41336764_2309590515939856_3014107714986624367_n.jpg?_nc_ht=scontent-icn1-1.cdninstagram.com&se=7&ig_cache_key=MTg3Nzg1Mjk1Njk0NDkwNTAwMg%3D%3D.2"></div>
<div class="shot"><img src="https://scontent-icn1-1.cdninstagram.com/vp/d8b9d0e098128aad6eac6c39c19439cb/5CD059B2/t51.2885-15/e35/46699770_789255231412285_7247415646102729111_n.jpg?_nc_ht=scontent-icn1-1.cdninstagram.com&se=7&ig_cache_key=MTkyMjcyMTIwOTQyODk0Mjc5NQ%3D%3D.2"></div>
<div class="shot"><img src="https://scontent-icn1-1.cdninstagram.com/vp/a0efc75790b1d1a20306b4b9ee8c0d31/5C9D1D98/t51.2885-15/e35/42593422_668756993510074_548785136612309253_n.jpg?_nc_ht=scontent-icn1-1.cdninstagram.com&se=7&ig_cache_key=MTg4MjI5MDk5MzYyODEwOTk0Mw%3D%3D.2"></div>
<div class="shot"><img src="https://scontent-icn1-1.cdninstagram.com/vp/fa49d4e551525ac7a288784e0866f7cf/5CD53EA6/t51.2885-15/e35/44442144_2039456152959656_8454847146314760657_n.jpg?_nc_ht=scontent-icn1-1.cdninstagram.com&se=7&ig_cache_key=MTkxMTEwMTUwMTEzOTEzMzk4MA%3D%3D.2"></div>
<div class="shot"><img src="https://scontent-icn1-1.cdninstagram.com/vp/845ad7174d012da1d1b62ac375d2b466/5CD46203/t51.2885-15/e35/43816352_986229031581012_2433270463824730761_n.jpg?_nc_ht=scontent-icn1-1.cdninstagram.com&se=7&ig_cache_key=MTg5NTQwODg2MDE5NjA5OTA1NQ%3D%3D.2"></div>
<div class="shot"><img src="https://scontent-icn1-1.cdninstagram.com/vp/7d4877bc850a66d5aeb539c5510add7e/5C9BD445/t51.2885-15/e35/43621864_2280294755587222_1177965970195440793_n.jpg?_nc_ht=scontent-icn1-1.cdninstagram.com&se=7&ig_cache_key=MTg4NjY0MTkwODQ0MTE4MDcyOQ%3D%3D.2"></div>
<div class="shot"><img src="https://scontent-icn1-1.cdninstagram.com/vp/5252d016bae25d4ef4bca9e0c0a0306b/5CCFD742/t51.2885-15/e35/42927631_265838184102659_8658034749053379565_n.jpg?_nc_ht=scontent-icn1-1.cdninstagram.com&se=7&ig_cache_key=MTkxNjkzMDk2MDM3NTMwNTUzOA%3D%3D.2"></div>
<div class="shot"><img src="https://scontent-icn1-1.cdninstagram.com/vp/880acf9db110584cb44b3b69ad0a366f/5CB3E901/t51.2885-15/e35/41866047_1814622118587789_2219135764187038727_n.jpg?_nc_ht=scontent-icn1-1.cdninstagram.com&se=7&ig_cache_key=MTg4NDI5OTEwNzU1ODU4OTEzMg%3D%3D.2"></div>
</div>
<div class="profile--info"><span class="username">ʏɪɴʀᴜɪ ᴅᴇɴɢ</span><span>☺#bobby_dyr</span><br/><span class="userquote">In 2018, ʏɪɴʀᴜɪ ᴅᴇɴɢ received 164❤️, 7✉️ per post by average, and a total of</span></div>
<div class="user-social-wrapper">
<div class="user-info user-posts"><span>104</span><span>Shots</span></div>
<div class="user-info user-followers"><span>16,964</span><span>Likes</span></div>
<div class="user-info user-following"><span>643</span><span>Comments</span></div>
</div>
</div>
I have this piece of code that has the profile card in the middle of screen regardless what the screen size is. It often appears too small for any type of screen. How can I position the profile card to almost fill the screen?
Basically what should I do to adjust it from (too small)to this (ideal)

Just change it:
.shots .shot {
overflow: hidden;
position: relative;
width: 33%; // <-- change it
height: 100px;
flex-grow: 1; // <-- add
}

I would use media queries and target the classes you want to amend on the different screen sizes to make it fit as you need. Some useful links:
https://css-tricks.com/snippets/css/media-queries-for-standard-devices/
https://developer.mozilla.org/en-US/docs/Web/CSS/Media_Queries/Using_media_queries
In your case, you would need to amend the width of the card to 100% on mobile to achieve the design on your screenshot. Hope that makes sense! :)

Max-height: 0 not collapsing Div

I would like my chat box to collapse when they touch the header of the chat, similar to facebook. I know that hide_wrapBox is correctly being added, but it doesn't set the height of its contained elements to a (collapsed) fixed height. In other words, the messages inside the chat box
disappear but the box still stands, where I'd prefer it to minimize.
<div id="messages-card-container" class="mdl-cell mdl-cell--12-col mdl-grid">
<!-- Messages container -->
<div id="messages-card" style="display:none;" class="mdl-card mdl-shadow--2dp mdl-cell mdl-cell--12-col mdl-cell--6-col-tablet mdl-cell--6-col-desktop">
<div class="mdl-card__supporting-text mdl-color-text--grey-600">
<div id="convoHeader">HEADER</div>
<div class="wrapBox">
<div id="messages">
<span id="message-filler"></span>
</div>
<form id="message-form" action="#">
<div class="mdl-textfield mdl-js-textfield mdl-textfield--floating-label">
<input class="mdl-textfield__input" type="text" id="message" placeholder="Type a message...">
</div>
</form>
<form id="image-form" action="#">
<input id="mediaCapture" type="file" accept="image/*,capture=camera">
<button id="submitImage" title="Add an image" class="mdl-button mdl-js-button mdl-button--raised mdl-js-ripple-effect mdl-color--amber-400 mdl-color-text--white">
</button>
</form>
</div>
</div>
</div>
<div id="must-signin-snackbar" class="mdl-js-snackbar mdl-snackbar">
<div class="mdl-snackbar__text"></div>
<button class="mdl-snackbar__action" type="button"></button>
</div>
</div>
Jquery:
<script>
$('#convoHeader').click(function(){
if($('.wrapBox').is(":visible")){
$('.wrapBox').hide();
$('#messages').addClass('hide_wrapBox');
console.log('you get here');
}else{
$('.wrapBox').show();
$('#messages').removeClass('hide_wrapBox');
}
});
</script>
CSS:
.hide_wrapBox {
max-height: 0;
width: 5px;
bottom:0;
outline: 4px solid red;
}
#messages-card {
float: right;
z-index: 1;
height: 400px;
width: 300px;
bottom: 0%;
margin-top: 15px;
}
#messages-card-container {
position: absolute;
right:0;
z-index: 1;
height: 400px;
bottom: 0%;
}
.mdl-layout__header-row span {
margin-left: 15px;
margin-top: 17px;
}
.mdl-grid {
max-width: 1024px;
margin: auto;
}
.material-icons {
font-size: 36px;
top: 8px;
position: relative;
}
.mdl-layout__header-row {
padding: 0;
margin: 0 auto;
}
.mdl-card__supporting-text {
position:relative;
width: auto;
height: 100%;
padding-top: 0;
padding-bottom: 0;
box-shadow: 0px 0px 2px 2px #888888;
}
#convoHeader, innerHTML{
position: relative;
color: white;
}
#convoHeader{
position:relative;
background-color: #c4d8e2;
padding-bottom: 6px;
}
#convoHeader: hover{
cursor:pointer;
}
#messages {
overflow-y: auto;
margin-bottom: 10px;
height: 270px;
//outline: 2px solid red;
}
#message-filler {
flex-grow: 1;
}
.message-container:first-of-type {
border-top-width: 0;
}
.message-container {
display: block;
margin-top: 10px;
border-top: 1px solid #f3f3f3;
padding-top: 10px;
opacity: 0;
transition: opacity 1s ease-in-out;
}
.message-container.visible {
opacity: 1;
}
.message-container .pic {
background-image: url('/images/profile_placeholder.png');
background-repeat: no-repeat;
width: 30px;
height: 30px;
background-size: 30px;
border-radius: 20px;
}
.message-container .spacing {
display: table-cell;
vertical-align: top;
}
.message-container .message {
display: table-cell;
width: calc(100% - 40px);
padding: 5px 0 5px 10px;
color: #666666;
}
.message-container .name {
display: inline-block;
width: 100%;
padding-left: 40px;
color: #bbb;
font-style: italic;
font-size: 12px;
box-sizing: border-box;
}
#message-form {
display: flex;
flex-direction: row;
float: left;
}
#image-form {
display: flex;
flex-direction: row;
width: 48px;
float: right;
}
#message-form .mdl-textfield {
//width: 300px;
position:absolute;
bottom:0;
}
#message-form, input{
width:295px;
height:32px;
font-size: 12px;
position:absolute;
bottom:0;
}
#message-form button, #image-form button {
width: 100px;
margin: 15px 0 0 10px;
}
.mdl-card {
min-height: 0;
}
.mdl-card {
background: linear-gradient(white, #f9f9f9);
justify-content: space-between;
}
#user-container {
position: absolute;
display: flex;
flex-direction: row;
top: 22px;
width: 100%;
right: 0;
padding-left: 10px;
justify-content: flex-end;
padding-right: 10px;
}
#user-container #user-pic {
top: -3px;
position: relative;
display: inline-block;
background-image: url('/images/profile_placeholder.png');
background-repeat: no-repeat;
width: 40px;
height: 40px;
background-size: 40px;
border-radius: 20px;
}
#user-container #user-name {
font-size: 16px;
line-height: 36px;
padding-right: 10px;
padding-left: 20px;
}
#image-form #submitImage {
width: auto;
padding: 0 6px 0 1px;
min-width: 0;
}
#image-form #submitImage .material-icons {
top: -1px;
}
.message img {
max-width: 300px;
max-height: 200px;
}
#mediaCapture {
display: none;
}
#media screen and (max-width: 610px) {
header {
height: 113px;
padding-bottom: 80px !important;
}
#user-container {
top: 72px;
background-color: rgb(3,155,229);
height: 38px;
padding-top: 3px;
padding-right: 2px;
}
#user-container #user-pic {
top: 2px;
width: 33px;
height: 33px;
background-size: 33px;
}
}
.mdl-textfield__label:after {
background-color: #0288D1;
}
.mdl-textfield--floating-label.is-focused .mdl-textfield__label {
color: #0288D1;
}
.mdl-button .material-icons {
top: -1px;
margin-right: 5px;
}

It's actually collapsing, but you have the wrapper around those divs such as #messages-card which is setting a height. So while #messages is collapsing, parent of #messages-card is maintaining the height you have set, making it appear nothing is collapsing:
#messages-card {
float: right;
z-index: 1;
height: 400px;
width: 300px;
bottom: 0%;
margin-top: 15px;
}
You'll need to play around with adjusting that wrapper's height, and it's positioning to resolve the issue you're having.

Instead of adding hide_wrapBox to messages try toggling it on wrapBox
$('#convoHeader').click(function(){
if($('.wrapBox').is(":visible")){
$('.wrapBox').addClass('hide_wrapBox');
}else{
$('.wrapBox').removeClass('hide_wrapBox');
}
});