.fade {
    opacity: 0;
    -webkit-transition: opacity 0.15s linear;
    -moz-transition: opacity 0.15s linear;
    -ms-transition: opacity 0.15s linear;
    -o-transition: opacity 0.15s linear;
    transition: opacity 0.15s linear;
}

.fade.in {
    opacity: 0.8;
}
