drawer {
    display: block;
    position: fixed;
    width: 275px;
    height: 100%;
    z-index: 100;
    background-color: white;
}

drawer.animate {
    -webkit-transition: 300ms all ease;
    transition: 300ms all ease;
}

drawer.left {
    -webkit-transform: translate3d(-100%, 0, 0);
    transform: translate3d(-100%, 0, 0);
    box-shadow: 1px 0px 10px rgba(0,0,0,0.3);
}

drawer.right {
    right: 0;
    top: 0;
    -webkit-transform: translate3d(100%, 0, 0);
    transform: translate3d(100%, 0, 0);
    box-shadow: -1px 0px 10px rgba(0,0,0,0.3);
}