Change off-canvas menu width

body .offside--left.is-open, .offside-js--is-left .offside-sliding-element {
	-webkit-transform: translate3d(400px,0,0);
	-moz-transform: translate3d(400px,0,0);
	-ms-transform: translate3d(400px,0,0);
	-o-transform: translate3d(400px,0,0);
	transform: translate3d(400px,0,0);
}
body .offside--right.is-open, .offside-js--is-right .offside-sliding-element {
	-webkit-transform: translate3d(-400px,0,0);
	-moz-transform: translate3d(-400px,0,0);
	-ms-transform: translate3d(-400px,0,0);
	-o-transform: translate3d(-400px,0,0);
	transform: translate3d(-400px,0,0);
}

body .main-navigation.offside {
	width: 320px;
}
body .offside--left {
	left: -400px;
}
body .offside--right {
	right: -400px;
}
body.offside-js--is-left.slide-opened .slideout-overlay button.slideout-exit {
	left: 395px;
}