.square {
	position: relative;
	overflow: hidden;
}
.square:before {
	content: '';
	display: block;
	padding-top: 100%;
}
.column-grid .list .square .overlay,
.assistance_item li .square .overlay {
	position: absolute;
	top: 0;
	left: 0;
	width: 100%;
	height: 100%;
}
.column-grid .list .square .overlay .sub-img,
.assistance_item li .square .overlay .sub-img {
	opacity: 0;
}
.column-grid .list .square .overlay:hover .sub-img,
.assistance_item li .square .overlay:hover .sub-img {
	opacity: 1;
}
.square img {
	position: absolute;
	top: 50%;
	left: 50%;
	-webkit-transform: translate(-50%, -50%);
	transform: translate(-50%, -50%);
	width: 100%;
	height: 100%;
	object-fit: cover;
}
.section-home.widget_welcart_bestseller .rankimg {
	z-index: 1;
}