img {
 border: 0;
}

.navtab {
 width: 16.666%;
 height: 40px; 
 padding: 0;
 overflow: hidden;
 text-align: center;
}

.navtab a {
 width: 100%;
 height: 100%; 
 display: block;
 color: #000000;
 font: 20px arial black;
 text-decoration: none;
 color: #FDD017;
 display:block;
 background-color: #488AC7;
 line-height: 40px;
}

.navtab a:hover {
 background-color: #a0a0a0;
 text-decoration: none;
 color: #FDD017;
}