.fade {
    -webkit-animation-name: fade;
    -webkit-animation-duration: 3.5s;
    animation-name: fade;
    animation-duration: 3.5s;
}

@-webkit-keyframes fade {
    from {opacity: .4}
    to {opacity: 1}
}

@keyframes fade {
    from {opacity: .4}
    to {opacity: 1}
}