Div above content - moves down second following div - css-float

Question

I am trying to add a div above my content div with the same width.
I would like it to only push down the content div, but it causes the sidebar div to move down as well.
<div id="container">
<div id="new-div">new div</div>
<div id="content">content</div>
<div id="sidebar">sidebar</div>
</div>
.
#container {
background: lightgrey;
width: 500px
}
#new-div {
background: darkred;
width: 300px
}
#content {
background: lightblue;
width: 300px;
height: 400px;
display: inline-block
}
#sidebar {
background: darkgreen;
width: 100px;
height: 400px;
float: right;
}
http://jsfiddle.net/zd9omqa7/2/
How can I avoid the sidebar div to move down? I would like it to always float in the right top corner.

Answer 1

The two easiest ways that spring to mind would be to either reorder the html so your sidebar comes first in the DOM:
http://jsfiddle.net/ctaylr/xxhdn1xb/1/
<div id="container">
<div id="sidebar">sidebar</div>
<div id="new-div">new div</div>
<div id="content">content</div>
</div>
or to use position absolute to brute-force move it to the top:
http://jsfiddle.net/ctaylr/warnjgp3/2/
(remember to position the container div relative for this to work)
Otherwise, you could look to wrap your left hand side "divs" in a container of its own.
Hope this helps!