body{
	 overflow-x: hidden;
}

.middle_v {
	float: none;
	display: inline-block;
	vertical-align: middle;
}

.single_line{
    overflow: hidden;
    /*文本不会换行*/
    white-space: nowrap;
    /*当文本溢出包含元素时，以省略号表示超出的文本*/
    text-overflow: ellipsis;
}

.nav_left_per_line{
	width: 200px;
	height:40px;
}

.font_blue{
	color: blue;
}

.force_all_border_radius{
	/*强制圆角*/
	border-top-right-radius: .25rem !important;
    border-bottom-right-radius: .25rem !important;
}

.no_bg_input{
	background: transparent;
	border: 0px;
}

.content_center{
	display: flex;/*设置为弹性容器*/
	align-items: center; /*定义div1的元素垂直居中*/
    justify-content: center; /*定义div1的里的元素水平居中*/    
}