Secondary menu not showing in Safari's Footer

@media only screen and (max-width : 880px) { [...] #secondary_nav {
    width: 100%;
    height: 12px;
    padding-top: 16px;
    position: fixed;
    bottom: 0;
    left: 0;
    right: 0;
    background: url(../images/trans.png) repeat;
}
 
#secondary_nav > ul {
    clear: left;
    float: left;
    margin: 0;
    padding: 0;
    position: relative;
    left: 50%;
    text-align: center;
    display: block;
}
 
#secondary_nav > ul > li {
    width: auto;
    display: block;
    clear: none;
    float: left;
    list-style: none;
    position: relative;
    right: 50%;
}
 
#secondary_nav ul li ul {
    left: 0;
    margin-right: 0;
}
 
#secondary_nav ul li ul li a {
    text-align: left; 
} [...] }