@if $use-slideOutDown == true { @-webkit-keyframes slideOutDown { 0% { -webkit-transform: translate3d(0, 0, 0); visibility: visible; } 100% { -webkit-transform: translate3d(0, 100%, 0); } } @keyframes slideOutDown { 0% { transform: translate3d(0, 0, 0); visibility: visible; } 100% { transform: translate3d(0, 100%, 0); } } .slideOutDown { @include animate-prefixer(animation-name, slideOutDown); } }