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Responsiveness layout - reorganizing divs

Is there any way to go from desktop layout to mobile layout as shown on the image below using CSS? (responsiveness layout).
On the image below, every square is a div including the red square (anonymous).
I have the following divs: {A, B, C, D, red}.
On my requirements it is not possible to move the div A inside the red div (html source code). I just need the rendering takes care to put div A after div B.
Below you have a sample you can run by yourself.
Also you have the jsfiddle here: https://jsfiddle.net/tjztgn5d/
* {
font-family: Arial;
}
#red {
float: left;
border: 1px solid #F00;
padding: 10px;
}
.header {
padding: 10px auto;
text-align: center;
}
#A {
float: left;
width: 140px;
height: 210px;
border: 1px solid #D79B00;
}
#A > .header {
background-color: #FFE6CC;
border-bottom: 1px solid #D79B00;
}
#B {
width: 140px;
height: 188px;
border: 1px solid #6C8EBF;
}
#B > .header {
background-color: #DAE8FC;
border-bottom: 1px solid #6C8EBF;
}
#C, #D {
width: 140px;
height: 88px;
}
#C {
border: 1px solid #B85450;
margin-bottom: 10px;
}
#C > .header {
background-color: #F8CECC;
border-bottom: 1px solid #B85450;
}
#D {
border: 1px solid #9673A6;
}
#D > .header {
background-color: #E1D5E7;
border-bottom: 1px solid #9673A6;
}
<div id="A">
<div class="header">A</div>
</div>
<div id="red">
<div id="B" style="float:left;margin-right:10px;">
<div class="header">B</div>
</div>
<div style="float:left;">
<div id="C">
<div class="header">C</div>
</div>
<div id="D">
<div class="header">D</div>
</div>
</div>
</div>
Any idea on how to achieve this without Javascript?

Yes, this can be done without altering the HTML or using Javascript. The trick is to use absolute positioning. It can work in your case because you are using fixed sizes anyway.
https://jsfiddle.net/anzL79py/
This is what I have added:
#media (max-width: 512px) {
/* erase inline styles. dont use them anymore! */
#B {
float: unset !important;
margin-right: unset !important;
}
#B + div {
float: unset !important;
}
#A {
position: absolute;
left: 19px;
top: 218px;
}
#B {
margin-bottom: 230px;
}
}
And the full snippet.
* {
font-family: Arial;
}
#red {
float: left;
border: 1px solid #F00;
padding: 10px;
}
.header {
padding: 10px auto;
text-align: center;
}
#A {
float: left;
width: 140px;
height: 210px;
border: 1px solid #D79B00;
}
#A > .header {
background-color: #FFE6CC;
border-bottom: 1px solid #D79B00;
}
#B {
width: 140px;
height: 188px;
border: 1px solid #6C8EBF;
}
#B > .header {
background-color: #DAE8FC;
border-bottom: 1px solid #6C8EBF;
}
#C, #D {
width: 140px;
height: 88px;
}
#C {
border: 1px solid #B85450;
margin-bottom: 10px;
}
#C > .header {
background-color: #F8CECC;
border-bottom: 1px solid #B85450;
}
#D {
border: 1px solid #9673A6;
}
#D > .header {
background-color: #E1D5E7;
border-bottom: 1px solid #9673A6;
}
#media (max-width: 512px) {
/* erase inline styles. dont use them anymore! */
#B {
float: unset !important;
margin-right: unset !important;
}
#B + div {
float: unset !important;
}
#A {
position: absolute;
left: 19px;
top: 218px;
}
#B {
margin-bottom: 230px;
}
}
<div id="A">
<div class="header">A</div>
</div>
<div id="red">
<div id="B" style="float:left;margin-right:10px;">
<div class="header">B</div>
</div>
<div style="float:left;">
<div id="C">
<div class="header">C</div>
</div>
<div id="D">
<div class="header">D</div>
</div>
</div>
</div>

In your case by not using JS, it would be better to use
Bootstrap Column + Flexbox in Media Query
.contain{
max-height:800px;
}
.A{
color:white;
font-size:100px;
background:red;
height:100vh;
border:10px solid white;
}
.B{
color:white;
font-size:100px;
background:green;
height:100vh;
border:10px solid white;
}
.C{
color:white;
font-size:100px;
background:blue;
height:50vh;
border:10px solid white;
}
.D{
color:white;
font-size:100px;
background:pink;
height:50vh;
border:10px solid white;
}
#media only screen and (max-width: 768px) {
.contain{
display:flex;
flex-direction:column;
}
.A{
order:2;
border:0px;
}
.B{
order:1;
border:0px;
}
.three{
order:3;
border:0px;
}
}
<link href="https://cdnjs.cloudflare.com/ajax/libs/twitter-bootstrap/3.3.7/css/bootstrap.min.css" rel="stylesheet"/>
<div class='container'>
<div class="row contain">
<div class="col-sm-4 A">1</div>
<div class="col-sm-4 B">2</div>
<div class="col-sm-4 three">
<div class="row">
<div class="col-sm-12 C">3</div>
<div class="col-sm-12 D">4</div>
</div>
</div>
</div>
</div>

iframe gets displaced on iOS when dragged

I have an iframe on my website that is populated when you click the Make an Appointment button. The iframe contains a contact form with several input fields.
Everything works fine, but for some reason on iOS (iPad and iPhone 5/6 - I tested Safari and Chrome) the form is draggable beyond its container's width and height. It should only be scrollable in the y-axis; like it is on Android devices. See screenshot below.
I've looked at numerous posts on S/O, but have yet to find any Q/A that pertains to this particular nuance of iOS devices/browsers.
Here is the code:
HTML:
<div id='button'><button id='contact'>MAKE AN APPOINTMENT</button></div>
<div id="block"></div>
<div id="iframecontainer">
<a id='close' href='#'>X</a>
<div id="loader"></div>
<iframe></iframe>
</div>
JQuery:
$('document').ready(function() {
$('#contact').click(function () {
$('#block').fadeIn();
$('#iframecontainer').fadeIn();
$('#header-wrapper').css("visibility", "hidden");
var width = $(window).width();
$('#iframecontainer iframe').attr('src', 'http://a-link-to-my-iframe.html');
if (width > 850) {
$('#iframecontainer').css('width', '790px');
$('#iframecontainer').css('margin-left', '-395px');
}
else {
$('#iframecontainer').css('width', '310px');
$('#iframecontainer').css('margin-left', '-155px');
}
$('#iframecontainer iframe').load(function() {
$('#loader').fadeOut(function() {
$('iframe').fadeIn();
});
});
});
And, the CSS:
#contact {
color: #c2c2c2;
background: #151515;
border: 1px solid #c2c2c2;
padding: 13px 26px;
text-decoration: underline;
font-family: inherit;
letter-spacing: 2px;
font-size: 18px;
margin: 0 auto;
}
#iframecontainer {
width:75%;
height: auto;
display: none;
position: fixed;
-webkit-overflow-scrolling:touch;
overflow-y: auto;
height:600px;
top: 10%;
background:#FFF;
border: 1px solid #666;
border: 1px solid #555;
box-shadow: 2px 2px 40px #222;
z-index: 999999;
left: 50%;
margin-left: -395px;
}
#iframecontainer iframe {
width: 100%;
height: 600px;
position: absolute;
border: none;
}
#loader {
width: 250px;
height: 250px;
margin:auto;
}
#block {
background: #000;
opacity:0.6;
position: fixed;
width: 100%;
height: 100%;
top:0;
left:0;
display:none;
}​
And here is a screen shot of what I am referring to:
Is there a specific way to disable this on iOS devices?

Try to add scrolling="no" on the iframe and change some iframe CSS like,
#iframecontainer iframe {
width: 1px;/* Make it a very small for your viewport */
min-width:100%;/* Overwrite width. Let it decides the actual width of iframe */
height: 600px;
position: absolute;
border: none;
}

Trouble with chat layout

I am trying to replicate a chat layout on a site I am working on. I was able to create the chat bubble and get the content in pretty much the right spot, I am just having trouble getting it exactly how I want. There are only a few tiny things I am having trouble with. I can't figure out how to get the triangle on the side of the bubble's border to be as thin as the rest of the bubble, as well as making it lower and smaller. I'm having trouble with positioning the sign in image a little lower like in the image of what I need it to look like. And lastly the "Sign In to Comment" needs to be a little to the left of the image. If anyone could shed any light on any of these things, it would be super appreciated!
Currently:
What I am trying to achieve:
As you can see I am very close! just a few tiny things giving me trouble.
HTML:
<div class="sign-in">
<div class="cell one">
<p class="triangle-border right blue">Join the Conversation</p>
</div>
<div class="cell two">
<img class="sign-in-img" src="<?php bloginfo('stylesheet_directory'); ?>/images/sign-in.png" />
</div>
</div>
<span class="si">Sign In to Comment</span>
CSS:
.triangle-border {
position:relative;
padding:15px;
margin:1em 0 .5em;
border:1px solid #5a8f00;
color:#333;
background:#fff;
/* css3 */
-webkit-border-radius:10px;
-moz-border-radius:10px;
border-radius:10px;
min-width: 90%;
max-width: 90%;
background-color: #E0F6F2;
}
.triangle-border.blue {
background-color: #CDE5F7;
border:1px solid #3A7DBA;
}
.triangle-border.right {
margin-right:30px;
}
.triangle-border:before {
content:"";
position:absolute;
bottom:-20px; /* value = - border-top-width - border-bottom-width */
left:40px; /* controls horizontal position */
border-width:20px 20px 0;
border-style:solid;
border-color:#5a8f00 transparent;
/* reduce the damage in FF3.0 */
display:block;
width:0;
}
/* creates the smaller triangle */
.triangle-border:after {
content:"";
position:absolute;
bottom:-13px; /* value = - border-top-width - border-bottom-width */
left:47px; /* value = (:before left) + (:before border-left) - (:after border-left) */
border-width:13px 13px 0;
border-style:solid;
border-color:#fff transparent;
/* reduce the damage in FF3.0 */
display:block;
width:0;
}
/* creates the larger triangle */
.triangle-border.right:before {
top:10px; /* controls vertical position */
bottom:auto;
left:auto;
right:-30px; /* value = - border-left-width - border-right-width */
border-width:15px 0 15px 30px;
border-color:transparent #3A7DBA;
}
/* creates the smaller triangle */
.triangle-border.right:after {
top:16px; /* value = (:before top) + (:before border-top) - (:after border-top) */
bottom:auto;
left:auto;
right:-21px; /* value = - border-left-width - border-right-width */
border-width:9px 0 9px 21px;
border-color:transparent #fff;
}
.pagecontent .cols .col.two .sign-in {
table-layout: fixed;
display: table;
outline: none;
}
.pagecontent .cols .col.two .sign-in .cell {
display: table-cell;
margin: 5px;
height: 100%;
}
.pagecontent .cols .col.two .sign-in .cell.one {
width: 85%;
}
.pagecontent .cols .col.two .sign-in .cell.two {
padding-left: 2%;
width: 15%;
}
.pagecontent span.si {
font-size: .8em;
color: #808C8D;
}

Here is one way to do it:
<div class="wrapper">
<p class="talk-bubble">
talk bubble talk bubble talk bubble talk bubble talk bubble talk bubble talk bubble talk bubble talk bubble talk bubble talk bubble talk bubble talk bubble talk bubble
</p>
<p class="sign-in">
Sign In to Comment
</p>
<img src="your/image.png" />
</div>
CSS:
div.wrapper {
position: relative;
padding-bottom: 0px;
background-color: #ffffff;
z-index: -2;
}
div.wrapper img {
position: absolute;
bottom: 0;
right: 0;
border: 1px solid black;
width: 40px;
height: 40px;
}
.sign-in {
text-align: right;
margin: 0;
margin-right: 50px;
padding: 0;
}
p.talk-bubble {
border: 1px solid #3A7DBA;
padding: 15px;
background-color: #CDE5F7;
position: relative;
margin-right: 60px;
}
p.talk-bubble:before,
p.talk-bubble:after {
box-sizing: border-box;
padding: 0;
content: '';
width: 20px;
height: 20px;
display: block;
position: absolute;
border: 20px solid transparent;
}
p.talk-bubble:before {
z-index: -1;
border-bottom: 20px solid #3A7DBA;
right: -12px;
bottom: -1px;
}
p.talk-bubble:after {
border-bottom: 20px solid #CDE5F7;
right: -10px;
bottom: 0px;
}
https://jsfiddle.net/mcgraphix/zLx5967t/

Check this out:
.triangle-border {
position:relative;
padding:15px;
margin:1em 0 .5em;
border:1px solid #5a8f00;
color:#333;
background:#fff;
/* css3 */
-webkit-border-radius:10px;
-moz-border-radius:10px;
border-radius:10px;
min-width: 90%;
max-width: 90%;
background-color: #E0F6F2;
}
.triangle-border.blue {
background-color: #CDE5F7;
border:1px solid #3A7DBA;
}
.triangle-border.right {
margin-right:30px;
}
.triangle-border:before {
content:"";
position:absolute;
bottom:-20px; /* value = - border-top-width - border-bottom-width */
left:40px; /* controls horizontal position */
border-width:20px 20px 0;
border-style:solid;
border-color:#5a8f00 transparent;
/* reduce the damage in FF3.0 */
display:block;
width:0;
}
/* creates the smaller triangle */
.triangle-border:after {
content:"";
position:absolute;
bottom:-13px; /* value = - border-top-width - border-bottom-width */
left:47px; /* value = (:before left) + (:before border-left) - (:after border-left) */
border-width:13px 13px 0;
border-style:solid;
border-color:#fff transparent;
/* reduce the damage in FF3.0 */
display:block;
width:0;
}
/* creates the larger triangle */
.triangle-border.right:before {
top:25px; /* controls vertical position */
bottom:auto;
left:auto;
right:-15px; /* value = - border-left-width - border-right-width */
border-width:5px 0 5px 15px;
border-color:transparent #3A7DBA;
}
/* creates the smaller triangle */
.triangle-border.right:after {
top: 27px;
bottom: auto;
left: auto;
right: -13px;
border-width: 3px 0 3px 13px;
border-color: transparent #ccf;
}
.pagecontent .cols .col.two .sign-in {
table-layout: fixed;
display: table;
outline: none;
}
.pagecontent .cols .col.two .sign-in .cell {
display: table-cell;
margin: 5px;
height: 100%;
}
.pagecontent .cols .col.two .sign-in .cell.one {
width: 85%;
}
.pagecontent .cols .col.two .sign-in .cell.two {
padding-left: 2%;
width: 15%;
}
.pagecontent span.si {
font-size: .8em;
color: #808C8D;
}
<div class="sign-in">
<div class="cell one">
<p class="triangle-border right blue">Join the Conversation</p>
</div>
</div>

css: cut corner of box

So I have created a box in css like this:
#box
{
background-color: #5d5d5d;
border-radius: 2px 2px 2px 2px;
box-shadow: 5px 5px 2px #767676;
height: 200px;
width: 1100px;
}
with the result of
What I want to do without overlaying a smaller whitebox, and without messing up the shadow effect is something like this:
Is this possible, or am I going to have to just add a smaller whitebox over the top and play with the layering and shadow effects until they're about right?
Or maybe there is a way using JavaScript or something like that?
NB: What I don't want to do is just create the box in photoshop as this will slow overall load time of the page

option:1 boxshadow
body{padding:40px}
#box
{
background-color: white;
border-radius: 2px 2px 2px 2px;
box-shadow: 14px -88px 0px white,5px 5px 2px #767676,inset 199px -88px 0 #5d5d5d;
height: 200px;
width: 510px;
}
<div id=box />
option:2 pseudo element see #Fahad Hasan

You can use the :before pseudo-element to achieve what you're trying to do like this: DEMO. This is the CSS which I've added:
div#box:before {
content:'';
background: white;
width: 700px;
display: block;
height: 100px;
float: right;
}

You can create an ::after pseudo-element with a white background, float it right and offset it to move over the shadow:
#box::after{
content:'';
width:500px;
height:100px;
position:relative;
float:right;
top:0px;
right:-7px;
background-color:#fff;
}

You should try with pseudo elements, this is an example:
HTML:
<div id="mydiv"></div>
CSS:
div#mydiv{
width:300px;
height:300px;
background-color:red;
}
div#mydiv::after {
content: ' ';
display: block;
background-color: blue;
width: 270px;
height: 100px;
float: right;
}
Here is a demo

Open a popup window in the center of the monitor

I am trying to open a popup window in the center of the monitor. As I know screen size of each desktop or laptop will vary. So that is the reason I am looking for some way so that whenever my code tries to open a popup window it should get opened in the center of the browser.
Below is my code-
<html>
<head>
<style>
* { font-family: Trebuchet MS; }
#containerdiv {width:90%; height: 90%; display: none; position: fixed;margin-top: 5%; margin-left: 5%; background:#FFF; border: 1px solid #666;border: 1px solid #555;box-shadow: 2px 2px 40px #222; z-index: 999999;}
/*#containerdiv iframe {display:none; width: 100%; height: 100%; position: absolute; border: none; }*/
#blockdiv {background: #000; opacity:0.6; position: fixed; width: 100%; height: 100%; top:0; left:0; display:none;}
ul { padding:10px; background: #EEE; position: absolute; height: 200px; overflow: scroll;}
ul li {color: #222; padding: 10px; font-size: 22px; border-bottom: 1px solid #CCC; }
h3 { font-size: 26px; padding:18px; border-bottom: 1px solid #CCC; }
#close { top: 13px;position: absolute;right: 13px; padding: 10px; background: #EEE; border: 1px solid #CCC;}
#close:hover { cursor: pointer; background: #E5E5E5 }
#apply { top: 13px;position: absolute;left: 13px; padding: 10px; background: #EEE; border: 1px solid #CCC;}
#apply:hover { cursor: pointer; background: #E5E5E5 }
</style>
<script type="text/javascript" src="http://code.jquery.com/jquery-1.7.2.min.js"></script>
<script>
function open(url) {
$('#blockdiv').fadeIn();
$('#iframe').attr('src', url);
$('#containerdiv').fadeIn();
}
function close() {
$('#blockdiv').fadeOut();
$('#containerdiv').fadeOut();
}
$(document).ready(function() {
$('ul').css({width: $('#containerdiv').width()-20,height: $('#containerdiv').height()-90})
$('#close').click( function() { close() })
$('#apply').click( function() { open('http://www.google.com/') })
});
</script>
</head>
<body>
<span id="apply">ApplyOnline</span>
<div id="blockdiv"></div>
<div id="containerdiv">
<iframe id="iframe" style="width:100%; height: 100%; outline: 1px solid red;"></iframe>
<span id="close">Close</span>
</div>
</body>
</html>
But somehow the above code, doesn't gets opened in the center of the monitor. Can anybody help me on this? What changes I need to make in the above code so that it always open the popup window in the center of the circle.

you can center you popup in css like
this is only css method to make it center so no js will be required to center it
#containerdiv {
width:90%;
height: 90%;
display: none;
position: fixed;
left:50%;
top:50%;
margin:-45% 0 0 -45%;
background:#FFF;
border: 1px solid #666;
border: 1px solid #555;
box-shadow: 2px 2px 40px #222;
z-index: 999999;
box-sizing:border-box;
-webkit-box-sizing:border-box;
-moz-box-sizing:border-box;
}

It appears centered within the browser window to me.
If you want to center it based on screen resolution of the client's monitor you can use:
var centerDiv=function(){
var popUpHeight=$('#containerdiv').height();
var popUpWidth=$('#containerdiv').width();
var yPos=(window.screen.availHeight/2)-(popUpHeight/2)-window.screenY-(window.outerHeight-window.innerHeight);
var xPos=(window.screen.availWidth/2)-(popUpWidth/2)-window.screenX-(window.outerWidth-window.innerWidth);
$('#containerdiv').css({position:"absolute",top: yPos+"px",left: xPos+"px"});
}
window.onload=centerDiv();
var lastX = window.screenX;
var lastY = window.screenY;
var lastHeight = window.innerHeight;
var lastWidth = window.innerWidth;
setInterval(function(){
if(lastX != window.screenX || lastY != window.screenY || lastHeight != window.outerHeight || lastWidth != window.outerWidth){
centerDiv();
}
oldX = window.screenX;
oldY = window.screenY;
}, 33);