:root {
    --slide-distance: 400px;
    --slide-time: 300ms;
}


.in-view {
translate3d(100 , 0, 0);
}

.animation-element {
    position: relative;
    opacity: 0;
}

.animation-element.slide-right {
    opacity: 0;
    -moz-transition: all var(--slide-time) linear;
    -webkit-transition: all var(--slide-time) linear;
    -o-transition: all var(--slide-time) linear;
    transition: all var(--slide-time) linear;
    -moz-transform: translate3d(var(--slide-distance), 0px, 0px);
    -webkit-transform: translate3d(var(--slide-distance), 0px, 0px);
    -o-transform: translate(var(--slide-distance), 0px);
    -ms-transform: translate(var(--slide-distance), 0px);
    transform: translate3d(var(--slide-distance), 0px, 0px);
}

.animation-element.slide-right.in-view {
    opacity: 1;
    -moz-transform: translate3d(0px, 0px, 0px);
    -webkit-transform: translate3d(0px, 0px, 0px);
    -o-transform: translate(0px, 0px);
    -ms-transform: translate(0px, 0px);
    transform: translate3d(0px, 0px, 0px);
}