Sidebar height stretch with the content height CSS

Question

I have 2 DIVs:

How would i make the sidebar div stretch the s

Answer 1

Set the same height for them, you could possibly even give them a float. By the way you have a bug in your html, write it like so:

​

And the css:

#sidebar{
width: 40px;
height:350px;
float: left;
margin-left: 10px;
border: 1px solid red;
}

#content{
width: 165px;
height:350px;
float: left;
margin-left: 10px;
border: 1px solid blue;
}

​ Example