Having a div and a h1 inside a section, how do i float the div in the top right corner without overlapping the text of the header ?

The HTML code is the following:

<section>
  <h1>some long long long long header, a whole line, 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6</h1>
  <div><button>button</button></div>
</section>

• I tried an absolute position relative to the parent but the text is overlapped, http://jsfiddle.net/FnpS8/2/

  

Using this CSS code:

section { position: relative; }
h1  { display: inline; }
div {
    position: absolute;
    top: 0;
    right: 0;
}

• I tried floating the div to the right but it doesn't remain in the top right corner, http://jsfiddle.net/P6xCw/2/

  

Using this CSS code:

h1  { display: inline; }
div { float: right;    }

?

I know there is a lot of similar questions but I couldn't find one solving this case.