Develop Reference

Expand current div on hover and shrink others

I'm working on a project in school where I want some sort of slideshow on the webpage. I've gotten to a place where I'm not sure how to proceed. Here is what I got so far:
body {
background-color: #252525;
}
#wrapper {
width: 90%;
margin: 0 auto;
padding: 2%;
}
#images {
width: 100%;
height: 300px;
text-align: center;
overflow: auto;
}
#container-1 {
display: inline-block;
background-color: #fff;
width: 100px;
height: 300px;
transition: .5s ease-in-out;
}
#container-1:hover {
background-color: #189fff;
width: 80%;
height: 300px;
}
.container {
width: 100px;
height: 300px;
background-color: #fff;
display: inline-block;
transition: .5s ease-in-out;
}
.container:hover {
background-color: #189fff;
width: 80%;
height: 300px;
}
<div id="wrapper">
<div id="images">
<div id="container-1"></div>
<div class="container"></div>
<div class="container"></div>
<div class="container"></div>
</div>
</div>
What I want this to do is for whenever I hover one of these images (or divs if you will), it will expand and show the whole image. There are two images, one clipped, and one that is the whole image. (Maybe thats a bad thing?)
The class container is just temporary to get an image of how it will look and give the other divs a background color. In #container-1:hover, the width is not the exact one I'm going to use. It might differ from the images I'm using.
Also if I don't use overflow: auto; the other divs will be pushed below the others, which is something I don't want.
The code in a way works as I want it. The only problem I got really is that when I hover one of the divs, it will push the other ones to the side, creating a conflict. Is there a way to make that not happen? Maybe a way to reduce the width of the other divs when the current div is being hovered on?
I just recently started with JavaScript so I'm nowhere close experienced with it, but I'm open for suggestions, but we are not allowed to use jQuery or anything like that sadly.
Here is a fiddle of it: jsfiddle

Your problem is that when one of the elements is hovered and expands, the sum of all elements exceeds the width of the container, and the one or two last elements are pushed below the others (into the next line).
To avoid that using only CSS, you have to choose width values where three default elements and one expanded (hovered) elements together don't exceed 100% of the container, like in this fiddle:
https://jsfiddle.net/kju94h1n/
To make non-hovered elements narrower when another element is hovered would require Javascript.

HTML - My content becomes messed up when I zoom in/out

http://pastebin.com/1Yz1aF1S HTML/CSS
HTML code is in home.html
CSS code is in stylesheet.css
Whenever I zoom in our out my content moves around rather awkwardly and breaks my page a bit. Was wondering how i could fix this issue and work to avoid this issue in the future? Images of the site can be found here!
http://imgur.com/a/MbZkk
Still new to HTML and only just started learning it properly in University but I've been immensely enjoying it and am thinking about pursuing it as a career!

The page "breaking" looks to be the result of using float left and float right elements next to each other. If their is insufficient room, your right hand panel breaks to the next line but is still floated right.
You can achieve a non responsive layout that keeps both panels next to each other and locates the right hand panel flush with the right margin if there is room, but produces horizontal scroll bars if not, you can use table layout. A demonstration without using <TABLE> tags:
CSS
#panels
{ border: thin solid green; /* to see */
min-width: 100%;
display:table;
}
#leftPanel
{ border: thin solid red; /* to see */
min-width: 40em;
display: table-cell;
}
#rightPanelContainer
{ display: table-cell;
text-align: right; /* right justify */
}
#rightPanel
{ display:inline-block; /* allow panel to be justified */
border: thin solid blue; /* to see */
min-width: 20em;
text-align: left;
}
HTML
<div id="panels">
<div id="leftPanel">
Left Panel
</div>
<div id="rightPanelContainer">
<div id="rightPanel">
Right Panel
</div>
</div>
</div>

Removing vertical white space between divs, especially after hitting a breakpoint

I'm working on a responsive page design at the moment and I'm running into an issue with white-space between the divs, especially after hitting breakpoints.
body, html {
padding: 0;
margin: 0;
}
.header {
padding-top: 5px;
background-color: red;
width: 100%;
}
.sub-header {
padding: 5px;
margin: 0px;
background-color: yellow;
width: 100%;
}
.main-content {
padding: 5px;
background-color: blue;
width: 100%;
}
.footer {
position: absolute;
bottom: 0;
padding: 5px;
background-color: green;
width: 100%;
}
#media screen and (max-width: 320px) {
.sub-header {
display: none;
}
}
}
<div class="header">Header
<div class="sub-header">Sub-Header</div>
</div>
<div class="main-content">Auto adjust size</div>
I want to have the blue div take up the remaining space in this white space, as well as after the sub-header is removed at the break point.
<div class="footer">footer</div>
Here's a quick mock up of what I'm experiencing: http://jsfiddle.net/gaych7vp/6/
I understand what I have to do in order to make it take up the remainder of the white space before it hits a breakpoint (I'm assuming just tweaking the height values), but how would I go about making the blue div take up the remaining white space that gets created when the yellow div gets hidden after hitting the breakpoint?
I'm still really new to javascript but from other answers I've read it could be done by creation a function that finds the height of the browser and then subtracts it from the other divs. Is that possible and if so, how could I accomplish that?

Use position:absolute with different top values
.main-content {
position:absolute;
top:51px;
bottom:0px;
}
and
#media screen and (max-width: 320px) {
.main-content {
top: 23px;
}
}
fiddle
Another approach is using display:table and display:table-row
body, html{
width:100%;
height: 100%;
}
body{
display:table;
}
.main-content {
width: 100%;
height: 100%;
display:table-row;
}
fiddle
Make a div fill the height of the remaining screen space

You can use calc on the .main-content div to calculate the size, but you would need to set the heights of the header, footer, and subheader divs. Seems to me though you could just give the body a background color of blue, and achieve the same thing?

Change
#media screen and (max-width: 320px) {
.sub-header {
display: none;
}
}
to
#media screen and (max-width: 320px) {
.sub-header {
visibility: hidden;
}
}
I think this is what you meant. Fiddle.

There's no need for a JavaScript solution here.
The white area is caused because you are using position: absolute to force the footer to the bottom of the window, regardless of the content.
This isn't the normal way to achieve this, you'll run into issues later on when you do add content to your main-content div. You'll find that the footer will be positioned over this content (this will also happen if you shrink the window vertically).
I think what you'd like to do, is give the main-content div a min-height:, this way, the page won't collapse and look terrible if there is little content, but it will stretch naturally when more content is added.
You can also and remove the position: absolute from the footer div.
Here is a demonstration:
http://jsfiddle.net/t46aopas/
** UPDATE **
If you'd like a dynamic solution, I've created a heavily annotated JavaScript example here: http://jsfiddle.net/nahgdkaw/
(I included lots of comments since you said you were new to JavaScript ;) )
That should hopefully help you along the way a little.
Be aware that if the content inside the .main-content div is larger than the .main-content div area, the div will NOT expand to accommodate it.
You can however use the code provided and add in an if statement to, before resizing the .main-content div, check if the .main-content content
is larger than the available area (you may need to add a wrapper div around the .main-content content). If so, then resize the .main-content div to match the .main-content content height (otherwise, perform the resize as it currently is).
(Also, I strongly advise against using HTML tables for anything other than tabular data)

I edited my original answer but don't have the reputation points necessary to add a comment to notify you. I'll remove this answer after you've seen my updated answer above.

How to make a fixed div/nav resize with the div it's inside of?

I'm pretty fresh to web development and cannot figure this one out. Appreciate any help!
On re-size the fixed div moves out of the container instead of re-sizing. The site I'm working on has the nav as the fixed section and is inside of the main container.
Any help is appreciated. Thanks!
<div class="container">
<div class="fixed"></div>
</div>
.container {
border: 1px solid;
max-width: 600px;
width: 100%;
min-height: 1600px;
}
.fixed {
max-width: 600px;
width: 100%;
height: 50px;
border: 1px solid green;
position: fixed;
}
http://jsfiddle.net/KqvQr/

When you specify position as fixed the Element, even thought it is inside a parent container, It won't behave as a child of a parent container. It won't adjust his width according to the parent width. But I can give you a solution where when user resize the page the fixed element also get resize yet it is a position fixed
.fixed {
height: 50px;
border: 1px solid green;
position: fixed;
right:0;
left:0;
}
Don't specify widths for the container. instead of that specify left and right values. so then when page is resizing css only check for the left and right margin values. by keeping those values it will adjust its inner width always.
Here is the working fiddle http://jsfiddle.net/KqvQr/5/

I don't think you can achieve what you want if you stick with that constraints. Your width and max-width will work as expected if you change your position to relative instead of fixed..
Check out this Fiddle

div position absolute... overflow-y:auto and then vertical scrollbar covers some of the content

I have a div with absolute position
inside some other divs.
http://jsfiddle.net/d8GYk/
<div style="position: absolute;
display: block;
outline: 0px;
margin: 0px;
padding: 0px;
top: 0;
text-align: left;
font-size: 11px;
font-family: arial;
cursor: default;
border: 1px solid rgb(170, 170, 170);
overflow-x: hidden; white-space: pre;
overflow-y: auto;
left: 0px;
height: 132px;"><div>a a END</div><div>ab</div><div>ab</div><div>ab</div><div>ab</div><div>ab</div><div>ab</div><div>ab</div><div>ab</div><div>ab</div><div>ab</div><div>ab</div><div>ab</div></div>
As you can see the first div is not completely visible
That's because the vertical scroll bar covers it.
If I set overflow-y:scroll. The problem goes away.
However I don't want to do it because this div is autogenerated (via javascript) and in many cases I don't need the vertical scroll bar (for example if the list has one or two or three items)
Can somebody suggest how to resolve this problem ?

if the scrollbar may or may not show, use a content container with a wrapper that may or may not scroll. html:
<div class="container">
<div class="entries">
<div>ab a</div>
<div>ab</div>
...
</div>
</div>
and css:
.container {
height: 100px;
overflow-y: auto;
}
.entries div {
white-space: pre;
}
Demonstrator: http://jsfiddle.net/gFrbM
That said, if you absolute need pre white space handling, AND your lines are very long, you'll either need to turn on scroll for both directions, not just y, and that's a good indication that the way you're trying to present content is not a good way to go about it. The UX will be poor for your users, and depending on the content you're listing in these entry divs, there will be much better ways to show that data.

Du you really need "white-space: pre;"?
If you remove this part i think it is going to work

Use a margin-right for each div inside the container:
.container div{margin:0 20px 0 0}
http://jsfiddle.net/Karzin/d8GYk/2/

Add this to css
{padding-right: 20px;}
Reason: The border of the scroll is covering your div text. you need to give some space for the same.
http://jsfiddle.net/d8GYk/3/