.about_us_class {
	padding: 0 40px;
	display: flex;
	padding-right: 0px;
}

.about_us_but_class {
	display: flex;
	align-items: center;
	width: 200px;
	height: 50px;
	line-height: 50px;
	padding: 0 20px;
	font-size: 16px;
	color: #333333;
	cursor: pointer;
}

.about_us_but_class_select {
	background: #156CD2;
	color: #FFFFFF;
}

.about_us_but_arrow_class {
	width: 16px;
	height: 12px;
	background-image: url(../img/qianjin.png);
	background-repeat: no-repeat;
	background-size: 16px 12px;
	margin-left: 10px;
}