.slideToRight {
    position: absolute;
    left: -500px;
    -webkit-animation: slide 1.5s forwards;
    animation: slide 1.5s forwards;
    opacity: 0;
}

@-webkit-keyframes slide {
    100% { left: 0; opacity: 1;}
}

@keyframes slide {
    100% { left: 0; opacity: 1;}
}