/* Initial state (hidden or anything else) */
.cbp-so-init .cbp-so-side {
    opacity: 0;
    -webkit-transition: none;
    -moz-transition: none;
    transition: none;
}

.cbp-so-init .cbp-so-side-left {
    -webkit-transform: translateX(-80px);
    -moz-transform: translateX(-80px);
    transform: translateX(-80px);
}

.cbp-so-init .cbp-so-side-right {
    -webkit-transform: translateX(80px);
    -moz-transform: translateX(80px);
    transform: translateX(80px);
}

/* Animated state */
/* add you final states (transition) or your effects (animations) for each side */
.cbp-so-section.cbp-so-animate .cbp-so-side-left,
.cbp-so-section.cbp-so-animate .cbp-so-side-right {
    -webkit-transition: -webkit-transform 0.5s, opacity 0.5s;
    -moz-transition: -moz-transform 0.5s, opacity 0.5s;
    transition: transform 0.5s, opacity 0.5s;
    -webkit-transform: translateX(0px);
    -moz-transform: translateX(0px);
    transform: translateX(0px);
    opacity: 1;
}