search box stylesheet problem

So you see that search box in the upper right corner of this page?

Everything that I try in the theme's stylesheet to make it input field wider doesn't work.

}

#search .form-text, #search .form-submit {
  border: 1px solid #369;
  font-size: 0.85em;
  margin: 0.2em;
  width:300px;
 
}
#search .form-text {
  width: 300em;
}
#search .form-submit {
  height: 1.5em;
}

I've looked in other module css files as well.

Anyone know where this box is actually being controlled from?

Thanks!