body,html{
	margin: 0;
	padding: 0;
}
.center_in_sequence{
	display: flex;
	flex-direction: column;
	align-items: center;
}
.center_in{
	width: 100%;
	display: flex;
	justify-content: center;
	align-items: center;
}
.space_between{
	width: 100%;
	display: flex;
	justify-content: space-between;
	align-items: center;
}
.same_row_in {
	display: flex;
	align-items: center;
}
.up_and_down{
	display: flex;
	flex-direction: column;
	justify-content: space-between;
	align-items: center;
}
// 伪元素1rpx边框
.frame {
	position: relative; //重要
}

.frame::after {
	position: absolute;
	content: '';
	border-bottom: 4rpx solid #e4e7ed;
	width: 200%;
	height: 200%;
	top: 0;
	left: 0;
	transform: scale(0.5);
	transform-origin: 0 0;
	pointer-events: none; /* 使伪元素不会阻止鼠标事件 */
}