header h1 a {
    width: 100%;
    heght: 0;
    margin: 0;
    padding: 1.5em 0 0 0;
    background-image: url(../img/smart/logo.png);
    background-position: left top;
    background-repeat: no-repeat;
    -moz-background-size: contain;
    background-size: contain;
    display: block;
    overflow: hidden;
    text-indent: -9999px;
}