Aligning divs horizontally inside a centered container - html

Question

How can I align 4 divs, in css, inside a container like in this image: http://postimg.org/image/w0k7wgdfb/
Here's my html, I guess I need another container for DIV#2 and DIV#3.
<div id="container">
<div id="header"> DIV 1 </div>
<div id="wraper"> <!-- WRAPER -->
<div id="sidebar"> DIV 2 </div>
<div id="content"> DIV 3 </div>
</div> <!-- WRAPER -->
<div id="footer"> DIV4 </div>
</div>
Thank you for your help!

Answer 1

Solution 1 - Floats
After centre aligning the content, you could use a simple float trick for the two middle divs:
CSS
html, body {
height: 100%;
width:100%;
margin: 0;
padding: 20px;
box-sizing:border-box;
}
#container {
text-align:center;
width:500px;
margin: 0 auto;
height:100%;
background:black;
padding:20px;
box-sizing:border-box;
}
#header {
background:green;
height:20%;
}
#wraper {
height:60%;
overflow:hidden;
}
#sidebar {
width:20%;
float:left;
height:100%;
background:red;
}
#content {
overflow:hidden;
background:blue;
height:100%;
}
#footer {
background:orange;
height:20%;
}
Solution 2 - Display:Table
After centre aligning the content, you could apply a table layout to the middle divs
CSS
html, body {
height: 100%;
width:100%;
margin: 0;
padding: 20px;
box-sizing:border-box;
}
#container {
text-align:center;
width:500px;
margin: 0 auto;
height:100%;
background:black;
padding:20px;
box-sizing:border-box;
}
#header {
background:green;
height:20%;
}
#wraper {
height:60%;
display:table;
width:100%;
}
#sidebar {
width:20%;
display:table-cell;
background:red;
}
#content {
display:table-cell;
background:blue;
}
#footer {
background:orange;
height:20%;
}

Answer 2

Here there is a working fiddle.
HTML
CSS
#one{
width: 400px;
background: black;
margin: 0 auto;
height: 600px;
}
#two{
height: 100px;
width: 400px;
background: lime;
}
#three{
height: 400px;
width: 100px;
background: yellow;
float: left;
}
#four{
height: 400px;
width: 300px;
background: blue;
float: left;
}
#five{
height: 100px;
clear: both;
width: 400px;
background: silver;
}