Push button under dynamically added select-boxes - css

Question

I have a button with a function that adds selectboxes to the page. I have a H1 with some text, a button, and boxes that are added above the button. I want the button the be right under the H1, but when I add selectboxes it will be pushed down.
This is what is currently happening, the button follows the select-boxes:
CSS
#interesses select{
background-image: -webkit-linear-gradient(top, #fefefe, #eeeeee);
background-image: -moz-linear-gradient(top, #fefefe, #eeeeee);
background-image: -o-linear-gradient(top, #fefefe, #eeeeee);
background-image: linear-gradient(to bottom, #fefefe, #eeeeee);
-webkit-box-shadow: inset 0 -1px rgba(0, 0, 0, 0.03), 0 1px rgba(0, 0, 0, 0.04);
box-shadow: inset 0 -1px rgba(0, 0, 0, 0.03), 0 1px rgba(0, 0, 0, 0.04);
border: 1px solid;
border-color: #d8d8d8 #d1d1d1 #c3c3c3;
border-radius: 1%;
width:30%;
margin-right: 2%;
margin-bottom: 15px;
padding: 0%;
font-size: 18px;
float: left;
font-family:'Helvetica Neue', Helvetica, Arial, sans-serif;
font-weight: 300;
line-height: 1.5;
height: 38px;
-webkit-appearance: none;
}
#interesses-option{
float:left;
display: block;
position:inline;
margin-bottom: 25px;
}
.wide-button-thin{
width: 30%;
height: 40px;
margin-top: 25px;
margin-bottom: 20px;
font-size: 18px;
font-family:'Helvetica Neue', Helvetica, Arial, sans-serif;
font-weight: 300;
color: #494d59;
text-align: center;
text-shadow: 0 1px rgba(255, 255, 255, 0.5);
border: 1px solid;
border-color: #d8d8d8 #d1d1d1 #c3c3c3;
border-radius: 2px;
cursor: pointer;
background-image: -webkit-linear-gradient(top, #fefefe, #eeeeee);
background-image: -moz-linear-gradient(top, #fefefe, #eeeeee);
background-image: -o-linear-gradient(top, #fefefe, #eeeeee);
background-image: linear-gradient(to bottom, #fefefe, #eeeeee);
-webkit-box-shadow: inset 0 -1px rgba(0, 0, 0, 0.03), 0 1px rgba(0, 0, 0, 0.04);
box-shadow: inset 0 -1px rgba(0, 0, 0, 0.03), 0 1px rgba(0, 0, 0, 0.04);
}
It works if I insert two <br> before the button, but I didn't get it to work with margin-top. Any suggestions what I could try?
EDIT:
Here are jsfiddle: http://jsfiddle.net/DWtPt/

Answer 1

To fix this, you should only move the button code above the interesser id like this:
<div id="velg-interesse">
<h2>Legg til interessene dine under:</h2>
<input type="button" class="wide-button-thin" id="leggtilInteresse" value="Legg til interesse">
<div id="interesser"></div>
</div>