width 100% makes a scroll bar
html form
option SELECTED value="a" preselects a default
html {overflow-x: hidden;}
also, any footer with text-align center and left 17% will cause a horiz scroll bar
how to have a footer at the bottom
#container {
min-height:100%;
position:relative;
}
<div id="container">
<contents>
<footer>
</div> <!-- end container -->
http://matthewjamestaylor.com/blog/keeping-footers-at-the-bottom-of-the-page