@-moz-keyframes slideup {
    from { padding-top: 28px; }
    to   { padding-top: 20px; }
}

@-webkit-keyframes slideup {
    from { padding-top: 28px; }
    to   { padding-top: 20px; }
}

@keyframes slideup {
    from { padding-top: 28px; }
    to   { padding-top: 20px; }
}