Hi there,
try this CSS:
@media (max-width: 768px) {
.offside--left {
left: auto;
right: -265px;
}
.offside--left.is-open,
.offside-js--is-left .offside-sliding-element {
-webkit-transform: translate3d(-265px, 0, 0);
-moz-transform: translate3d(-265px, 0, 0);
-ms-transform: translate3d(-265px, 0, 0);
-o-transform: translate3d(-265px, 0, 0);
transform: translate3d(-265px, 0, 0);
}
.offside-js--is-left.slide-opened .slideout-overlay button.slideout-exit {
left: unset;
right: 260px;
}
}