#btnControl {
    display: none;
}
#btnControl:checked + label > img {
	display: none;
}
#btnLeft {
	position: absolute !important;
	left: -100% !important;
	right: -100% !important;
	top: -100% !important;
	bottom: -100% !important;
	margin: auto !important;
	width: 35% !important; /* you can use % */
	height: auto !important;
	min-height: 10% !important;
	min-width: 10% !important;
	box-shadow: 0 10px 16px 0 rgb(0 0 0 / 20%), 0 6px 20px 0 rgb(0 0 0 / 19%) !important;
	z-index: 999;
}