Improve search

This new approach makes sure the input field is hidden on browsers which
ignore `display:none`, such as w3m or lynx.

sass/style.scss

@@ -188,7 +188,6 @@ main {
 	}
 
 	input.search {
-		display: none; // Hide for non-js browsers
 		box-sizing: border-box;
 		width: 100%;
 		border: 1px solid #ccc;