Develop Reference

Scale div position with viewport

Im working on a spot the difference game.
So far I have an image with a difference shown by a red circle for testing.
I also have a dot (a button currently blue for testing but transparent for final) which will be what the user clicks on to get the difference.
I need help getting the dot to stay within the red circle when the browser window is resized.
Here is a link to my JSFIDDLE and the code is below
CSS:
.position001{position:relative}.block001{position:absolute;top:50px;left:673px;background-color:#7fffd4;border-radius:50%}.button001{background-color:transparent;border:1px solid transparent;width:45px;height:42px}.hide001{outline:0;border:none}
HTML
<div class="position001">
<div id="board001">
<button class="hide001" onclick="incorrect001()">
<img src="https://stefan.admark.co.uk/jimny.jpg" width="90%" />
</button>
<div class="block001">
<div id="disappear001">
<button class="button001" onclick="correct001()"></button>
</div>
</div>
</div>
</div>

This may help you to get going!
You have to use the height and width in vw since the screen changes and the size of the circle should also align with the view port.
Second, you can use Media query however I don't think that is a feasible option for you unless you're very good at handling media query when screen resolution changes, instead as suggested in my answer you can use vw for height, width and place another circle correctly, rest the property will take care of it.
.position001 {
position: relative;
}
.block001 {
position: absolute;
background-color: aquamarine;
border-radius: 50%;
top: 9.2%;
left: 61.4%;
width: 5vw;
height: 5vw;
}
.button001 {
background-color: transparent;
border: 1px solid transparent;
width: 45px;
height: 42px;
}
.hide001 {
border: none;
outline: none;
}
<div class="position001">
<div id="board001">
<button class="hide001" onclick="incorrect001()">
<img src="https://stefan.admark.co.uk/jimny.jpg" width="90%" />
</button>
<div class="block001">
<div id="disappear001">
<button class="button001" onclick="correct001()"></button>
</div>
</div>
</div>
</div>

You should put the blue dot and red circle under a div element. Then let the div's position be relative, and the dot and circle's position absolute And you can then position the div in order to position both the red circle and the blue dot. They will always be in the same area, above each other.
This is because the absolute position will make an elements position at 0, 0 regardless if there is another element there, or even 100 elements. But because absolute position can be modified if the element is under a relatively-positioned element, we can take advantage of that to easily position both the dot and the circle, and place them on top of each other.
Graphical demonstrations in here: https://css-tricks.com/how-to-stack-elements-in-css/

Marquee-like horizontal scroll without scrollbars?

I have seen both overflow scrolling with no scrollbars and Hide scrollbar for mobile devices while keeping the scroll ability ; unfortunately, both of these suggest a solution with position: absolute; and I think that I cannot really apply that to my problem.
The code in this example renders this:
Basically, the red outline boxes are divs of class .myBox, with a fixed width. These divs are side-by-side, in a container that is horizontally centered inside its container div. The top part is reserved for titles, which may be long. I'd like the titles to be rendered as on the right side one - but if they have focus, then I'd want the titles to scroll left-right with either keyboard arrow buttons, mouse wheel - or (also for mobile) dragging left and right.
Of course, since the right box's title has overflow: hidden;, there is no possibility to scroll. If I leave the scrollbar visible (overflow-x: scroll;) as on the left box, then the title is not visible at all (and I cannot scroll anyways).
So is it possible somehow to allow scrolling in the title parts of these boxes in this way (sort of like a marquee scroll behavior, but manual)?
Bonus question: is there a sort of a JavaScript library (or even better, a plain CSS solution), that would allow something similar - except, if the text is too long, it is truncated and ellipsis is added (so, instead of "My even longer" it should show "My even lon..." at start), then as you drag right to left, it also calculates ellipsis at start and at end - and when you come to the right end, it takes away the right ellipsis?
The example code is:
.mainHolder {
font-size: 14px;
border: 2px solid #999;
text-align: center; /* centers the span */
}
.centerer {
border: 2px solid #555;
display: inline-block; /* makes the span have the same width as its div contents*/
margin: 0;
padding: 0;
}
.myBox {
width: 8em;
border: 2px solid #F55;
border-radius: 0.5em;
display: inline-block; /* enables two myBox side-by-side */
}
.heading {
height: 1.25em;
border-radius: 0.25em;
background-color: #94B6F7;
overflow: hidden;
overflow-x: scroll;
}
/*just as example, remove the scroller of box2*/
#box2 .heading {
overflow-x: hidden;
}
<div class="mainHolder">
<span class="centerer">
<div id="box1" class="myBox">
<div class="heading">
My very long title
</div>
<div class="data">
Data: 1
</div>
</div>
<div id="box2" class="myBox">
<div class="heading">
My even longer title
</div>
<div class="data">
Data: 2
</div>
</div>
</span>
</div>

Slide a div from left-right or right left with preserving div size

I want a slide effect on a div from left to right or from right to left as in
$('#div').show('slide', {direction:'left'}, 1000);
being my html is
<div id="div-pre">
</div>
<div id="div">
</div>
<div id="div-nex">
</div
But the problem with this approach is that we are hiding the #div initially by setting
#div{
display:none;
}
so that we cannot preserve the width of #div
I have came across another method by making the visibility: hidden as in
$("div").css("visibility", "hidden");
to preserve the width of the div
but this method does not give the sliding effect from left to right or right to left
So I want to achieve both "the effect as in .show('slide', [option], [speed]) altogether with
preserving the div width"

Having no example code to go off, I decided to write a basic example of how you could approach this. Basically, you put an overflow: hidden container around the thing that you want to slide to the left while preserving width, and you then animate a movement leftwards using animate('left':'-pixels');. Your div has to be positioned relatively for this to work. See example below.
$(document).ready(function(){
$('.slideLeft').click(function(){
$('.slider').animate(
{'left':'-600px'},
1000,
function(){
$('.slider').hide();
}
);
});
});
.slider{
height: 300px;
width: 600px;
font-size: 20px;
background-color: yellow;
position: relative;
}
.container{
border: 1px solid red;
height: 300px;
width: 600px;
background-color: silver;
overflow: hidden;
}
.slideLeft{
margin-top: 10px;
}
<script src="https://ajax.googleapis.com/ajax/libs/jquery/2.1.1/jquery.min.js"></script>
<div class="container">
<div class="slider">
Hi, I have some content!
</div>
</div>
<button class="slideLeft">Slide me left!</button>
Good luck!

You can wrap your div in another div with overflow:hidden and than you move to right or left the div inside.

bigvideo.js - stack DIVs over and under bigvideo container

So I've started playing around with bigvideo.js (which is built on top of video.js) and it works fine for the basic usage of having a fixed background video over the whole screen. I have also managed to show it inside of a div.
My problem though, is that I can't seem to stack other DIVs with other content over or under the bigvideo.js container div, and I can't seem to figure out how to solve this.
My HTML:
<div style="float: left; width: 100%; height: 300px;">
<h1>hi there</h1>
</div>
<div style="float: left; width: 100%; height: 500px;" id="intro-video-container">
</div>
JS firing up bigvideo:
$(function() {
var BV = new $.BigVideo({container: $('#intro-video-container'),useFlashForFirefox:false});
BV.init();
BV.show('intro.mp4',{ambient:true});
});
So the video container div ALWAYS gets stuck up to the left top of the body, no matter if I try to force it down with margin-top, or place divs before it, etc.
Any ideas?

Update, here is an illustration of what I kind of what to achieve:

Try to use container div (so called wrapping) in your page where you will place the desired content (as on the plugin's example page):
CSS
.box {
background:#444; background:rgba(0,0,0,.6);
padding:20px;
border-radius:5px;
margin-bottom:20px;
}
.main {
position:relative;
margin:50px 50px 440px 220px;
min-width:300px;
-webkit-transition-duration:0.6s;-moz-transition-duration:0.6s;-ms-transition-duration:0.6s;-o-transition-duration:0.6s;transition-duration:0.6s;
}
.dimmed {
color: #ccc;
}
#big-video-wrap {
height: 100%;
left: 0;
overflow: hidden;
position: fixed;
top: 0;
width: 100%;
}
HTML
<div id="big-video-wrap"></div>
<div class="main">
<div id="overview" class="box">
<h1>BigVideo<span class="dimmed"><small>.</small>js</span></h1>
<h2>Simple Ambient Video Example</h2>
</div>
</div>
JavaScript
$(function() {
var BV = new $.BigVideo({container: $('#big-video-wrap'),useFlashForFirefox:false});
BV.init();
BV.show('intro.mp4',{ambient:true});
});
EDIT:
Now, it is more clear what you are trying to achieve, the simplest solution is to include an iframe on place of the div, which points to your full-screen video page.
I.e. create page video.html with all initializations and plug-in includes, then use it as source of your iframe on main page. Your iframe can be styled to match the desired dimensions (for example 100% width and 300px height).

"float" a DIV to bottom of parent DIV not working. (Using Pos: rel, Bottom 0 etc)

Trying to get a DIV to "float" to the bottom of the div its in. I've got the position set to relative on the parent div and kid, and bottom to 0 on the kid; but it still just sits at the top in the middle.
Parent DIV:
.detailsContainer
{
width: 100%;
height: 30%;
overflow: hidden;
position: relative;
background-color: blue;
}
Kid DIV
.obutton
{
text-align: center;
font-weight: bold;
width: 80%;
height: 29px;
background:rgba(204,204,204,0);
position:relative;
bottom: 0;
display: inline-block;
color: #666;
}
Current actual setup:
<div class="detailsContainer">
<a href="javascript:unhide(\'BookDetails'.$row->BookID.'\');">
<div class="detailview"><b>Book Details<br></a></div>
<div id="BookDetails'.$row->BookID.'" class="hidden">
<table>
<tr><td>Total Stock </td><td>'.$row->TotalStock.'</td>
<td>Current Stock</td><td>'.$row->CurrentStock.'</td></tr>
<tr><td>Awards </td><td>'.$row->Awards.'</td>
<td>Film</td><td>'.$row->Film.'</td></tr>
</table>
</div>
';?>
<br><center><a href = "javascript:void(0)"
onclick = "document.getElementById('light').style.display='block';document.getElementById('fade').style.display='block'">
<div class= "obutton feature2">Reserve Book</div></a></center>
<div id="light2" class="white_content"></div>
<div id="fade" class="black_overlay"></div>
</div>
Its kind of a lot to post for this, but want to make sure nothing is interfering that you guys might spot. It jumps out of php near the bottom, I'll post the entire article if you think the issue might be else where.
I tried to make a jsfiddle of it, but there is so much php and variables that by time I gutted it, it'd just be 2 normal divs, having lost its uniqueness and the issue will probably have been deleted.
Thanks -Tom

.obutton position needs to be absolute... for bottom to work the way you're intending.