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HTML & CSS Tooltip Keeping On Screen

I need help keeping my CSS tooltip on screen for my website. It unfortunately is too big for the website near the edge of the screen and also is WAY too big for any mobile device and doesn't position correctly (probably because I plan to add very large descriptions in each tooltip). I would like to just use CSS but would be willing to use JS as I'm starting to think that may be the only way to do it correctly, but I'm having a lot of trouble figuring out how to make it work.
I basically had copied over the code from another website with many tweaks if it helps you understand my code better: https://www.w3schools.com/css/css_tooltip.asp
The only results I could find online were about centering the tooltip on the screen which strangely didn't work and code using SCSS which I'm not experienced with and would prefer not to use.
Here is my partial HTML and CSS code:
body {
overflow-x: hidden;
overflow-y: scroll;
}
.ref {
position: relative;
display: inline-block;
border-bottom: 1px dotted black;
}
.ref .versekjv {
visibility: hidden;
width: 250px;
background-color: black;
color: #fff;
text-align: left;
padding: 5px;
border-radius: 6px;
z-index: 98;
position: absolute;
top: 100%;
left: 50%;
margin-left: -125px;
flex-direction: column;
}
.ref .versekjv::after {
content: " ";
position: absolute;
bottom: 100%;
left: 50%;
margin-left: -5px;
border-width: 5px;
border-style: solid;
border-color: transparent transparent black transparent;
}
.ref:hover .versekjv {
visibility: visible;
}
.redletters {
color:red;
}
#media screen and (max-width:1000px){
.ref .versekjv {
font-size: 1rem;
max-width: 20rem;
position: fixed;
bottom: auto; top: 13%;
left: 78%;
text-align: left;
transform: translate(-50%);
transform: translateX(-50%);
white-space: normal;
z-index: 98;
}
.ref .versekjv::after {
border-color: transparent;
}
}
<li class="box"><a>
<div class="innerbox">Reference</div>
<div class="innerbox"><u class="ref">Reference<span class="versekjv"><b>Bible Book</b><p><i>#</i> Verse Text</p></span></u></div>
<div class="innerbox"><u class="ref">Reference<span class="versekjv"><b>Bible Book</b><p><i>#</i> Verse Text</p></span></u>; <u class="ref">Reference<span class="versekjv"><b>Bible Book</b><p><i>Verse Num.</i> Verse Text</p></span></u></div>
</a></li>
Thank you so much for your help!

First, you need to get the DOM object of your tooltip,
let tooltip = document.querySelector(".ref .versekjv")
Then, you can use the js method "getBoundingClientRect", which gives you an object that has top, right, left and bottom fields which give you the distances of your element from top, right, left and bottom of the viewport. If your element is fully visible inside the element, all four fields would be positive numbers, otherwise it means it's partly invisible, for example a left field of "-10" means about 10px of length of your elements is beyond the left edge of the viewport.
What you can do is that you always check the top, left, ... distances of your element, and if they are negative numbers, manually change them and thus position your element correctly, which could be achieved like this:
tooltip.style.left = 20

text wont activate js and css animation

I'm not the best with javascript and I've been asked to include it in a page I'm creating. I'm nearly there, getting a box containing a video, to slide over the screen from above and create a dark overlay. I can only get it to work using an image. I want to activate it from a href text link. I've looked everywhere, but everything I see uses the same method, using an image. Can someone help please?
$(function() {
$('#activator').click(function() {
$('#overlay').fadeIn('fast', function() {
$('#box').animate({
'top': '120px'
}, 500);
});
});
$('#boxclose').click(function() {
$('#box').animate({
'top': '-500px'
}, 500, function() {
$('#overlay').fadeOut('fast');
});
});
});
a.activator {
background: url(Overlay/clickme.png) no-repeat top left;
z-index: 1;
cursor: hand;
}
.overlay {
background: transparent url(Overlay/images/overlay.png) repeat top left;
position: fixed;
top: 0px;
bottom: 0px;
left: 0px;
right: 0px;
z-index: 100;
}
.box {
position: fixed;
top: -500px;
left: 20%;
width: 610px;
background-color: #fff;
color: #7F7F7F;
padding: 20px;
border: 2px solid #F79510;
-moz-border-radius: 20px;
-webkit-border-radius: 20px;
-khtml-border-radius: 20px;
-moz-box-shadow: 0 1px 5px #333;
-webkit-box-shadow: 0 1px 5px #333;
z-index: 101;
}
<script src="https://ajax.googleapis.com/ajax/libs/jquery/2.1.1/jquery.min.js"></script>
<a id="activator"><img src="images/Film-2.png" class="film"></a>
<!-- I want to add the text here, separate to the image, but to do the same activation. -->

Either you need to add the text inside the original "activator", or create another one.
Try this:
<a id="activator"><img src="images/Film-2.png" class="film"></a>
<div id="activator2"> Some text that activates the overlay </div>
And in your JS change
$('#activator').click(...
To:
$('#activator, #activator2').click(...
Now, both activators will trigger your script that makes the overlay show.
Also, in your CSS, you have a.activator while in your HTML is id="activator", but that might be just a typo.

Animate depending if input box is empty and stay there?

I am trying to make an input box that looks like it has a placeholder that says username, but when the box is selected it moves and changes to a darker color to resemble a label. The problem I am having is whenever I hover over the box it will complete the animation but then immediately undo it, putting the text back to look like a placeholder. I also want to make my Javascript/JQuery code so that if the box has any typing in it that the text will stay as a label and not go back to being the placeholder even without being selected. My other problem is that I do not know the JQuery command to tell if an input box is selected or not. I supply all my code below along with a link to CodePen which has the
<div id='inputdiv'>
<input id='textinp'>
</div>
<h4>Username</h4>
#textinp {
border: none;
width: 200px;
height: 30px;
font-size: 20px;
margin-left: 5px;
font-family: 'Roboto', sans-serif;
background: rgba(0, 0, 0, 0);
}
input:focus {
outline: 0;
}
#inputdiv {
width: 200px;
height: 32px;
margin: 0 auto;
margin-top: 70px;
border-top: 1px solid black;
border-right: none;
border-left: 1px solid black;
border-bottom: none;
z-index: -2;
}
h4 {
font-family: 'Roboto', sans-serif;
font-size: 20px;
position: relative;
bottom: 53px;
left: 575px;
color: #C2C2C2;
z-index: -1;
}
$(document).ready(function() {
$("#inputdiv").mouseenter(function() {
$("h4").animate({
left: '470px',
color: '#00000'
});
if ($('#textinp').val() == '') {
$("h4").animate({
left: '580px',
color: '#C2C2C2'
});
}
});
});
CodePen

Try using hover() method instead. As first parameter define function to be executed on hoverIn (on mouse entering), as second - function to be executed on hoverOut (on mouse leaving).
Here's your example updated:
http://codepen.io/anon/pen/LprybQ

jQueryMobile and Themeroller - do you need to re-roll themes when updating jQueryMobile?

I am using jQueryMobile 1.1-rc1 and my pageloading indicator is not displaying correctly.
I originally made my theme when the themeroller first came out, and everything has been fine through the last few updates of jQM until the most recent.
Now the loading icon doesn't spin and is no longer centered in the bubble.
Do you need to re-roll themes in themeroller when updating? I don't see the option of selecting the target version in themeroller.

I noticed that the old file name was ajax-loader.png. I think it is now ajax-loader.gif, so you might want to double check that.

The last few updates to the framework have changed the CSS quite a lot, and that will continue for the 1.1 release. When you change to a newer version of the JS file then you should also re-package your theme from the Themeroller.
In the last update they changed the CSS framework quite a bit for fixed headers/footers, transitions, and some other things (like the loading message has been revamped). The last update also gave the loading message more options so the structure of the HTML probably changed and the old CSS isn't quite right compared to the new JS.
To test this you can link to a standard current version of the CSS and see if the loading message appears correctly.

I took another look at this and the answer is that ThemeRoller for jQueryMobile is only compatible with 1.0.x release of jQM.
Todd Parker Answered the question here in the jQueryMobile issue tracker.
Tyler Benzinger Answered the question here in the Theme Roller issue tracker.
It seems we will have to wait for Theme Roller to support version 1.1 themes.
Update: Solution
In your theme.css comment out or delete the .ui-icon-loading section and insert the following (from the 1.1-rc1 css)
/* loading screen */
.ui-loading .ui-loader { display: block; }
.ui-loader { display: none; z-index: 9999999; position: fixed; top: 50%; box-shadow: 0 1px 1px -1px #fff; left: 50%; border:0; }
.ui-loader-default { background: none; opacity: .18; width: 46px; height: 46px; margin-left: -23px; margin-top: -23px; }
.ui-loader-verbose { width: 200px; opacity: .88; height: auto; margin-left: -110px; margin-top: -43px; padding: 10px; }
.ui-loader-default h1 { font-size: 0; width: 0; height: 0; overflow: hidden; }
.ui-loader-verbose h1 { font-size: 16px; margin: 0; text-align: center; }
.ui-loader .ui-icon { background-color: #000; display: block; margin: 0; width: 44px; height: 44px; padding: 1px; -webkit-border-radius: 36px; -moz-border-radiu$
.ui-loader-verbose .ui-icon { margin: 0 auto 10px; opacity: .75; }
.ui-loader-textonly { padding: 15px; margin-left: -115px; }
.ui-loader-textonly .ui-icon { display: none; }
.ui-loader-fakefix { position: absolute; }
/* loading icon */
.ui-icon-loading {
background: url(images/ajax-loader.gif);
background-size: 46px 46px;
}
Make sure you have the new ajax-loader.gif file in the theme images folder.

Help with Mootools Gallery - Transition text

I'm not sure if what i want is possible but i'm using a Mootools image gallery which you can see an example of here:
</script>
function startGallery() {
var myGallery = new gallery($('myGallery'), {
timed: true,
showArrows: false,
showCarousel: false
});
}
window.addEvent('domready', startGallery);
</script>
The gallery rotation is above but what i'd like to achieve, ideally, is the second text element (with the white background) to be wider than the top text element, so it looks more like the picture underneath.
There's a lot of Javascript involved so i don't know what i should post here to enable people to help, but just let me know what i should put in here and i'll come back and edit.
Or, if some knows of somethign similar in jQuery which would allow me to get the same effect, but not require too much JS coding, i'd be much obliged.
Thanks in advance as always,
Dan

Try this css and see if its what your after.
.slideInfoZone {
position: absolute;
z-index: 10;
width: 100%;
margin: 0px;
left: 0;
top:40px;
color: #FFF;
text-indent: 0;
overflow: hidden;
padding: 10px 0 0 20px;
height: 70px;
}
.slideInfoZone h3{
background: #000;
width: 200px;
padding: 30px;
margin-left: -30px;
display:inline;
}
.slideInfoZone p {
position: absolute;
bottom: 0;
background: #FFF;
font-size: 14px;
color: #000;
margin: 20px 0 0 -20px;
padding: 10px 0 10px 20px;
width: 50%;
}
Basically what I did was remove your background color for the containing element, then I gave the p tag a bg color, and modified the padding/margin for the h3. Im not too happy with what I had to do with the h3 but without changing the markup at all it works.