.column_box{
    width: 350px;
    height: 200px;
    background-color: #060939;
    opacity: 0.9;
    color: #fff;
    position: absolute;
    top: 50%;
    left: 0;
    transform: translateY(-50%);
    text-align: center;
}
.column_title{
    font-family: MicrosoftYaHei-Bold;
	font-size: 48px;
	font-weight: normal;
	font-stretch: normal;
	line-height: 72px;
	letter-spacing: 0px;
    color: #ffffff;
    margin-top: 20px;
}
.column_tab{
    width: 200px;
	height: 51px;
	background-color: #14a3e3;
    margin: 0 auto;
    color: #fff;
    font-size: 18px;
    line-height: 51px;
    cursor:pointer;
    margin-top: 10px;
}
.column_tab span{
    margin-right: 15px;
}
.introduce-container{
    width: 100%;
    padding: 50px 0;
}
.intr_item{
    width: 100%;
    padding: 50px 0;
}
.intr_item.reverse .intr_item-top{
    flex-direction: row-reverse ;
}
.intr_item.reverse .pic_show{
    margin-left: 150px;
}
.intr_item-top{
    width: 100%;
    display: flex;
}
.item_left{
    width: 50%;
    position: relative;
}
.item_right{
    width: 50%;
    position: relative;
}
.item_left .pic_show{
    width: 450px;
    height: 350px;
    background-color: #dfdfdf;
    position: relative;
}
.item_left .pic_show img{
    width: 100%;
    height: 100%;
    left: 20px;
    bottom: 20px;
    position: absolute;
}
.item_right .item_text .title{
    font-family: MicrosoftYaHei-Bold;
	font-size: 40px;
	font-weight: bold;
	font-stretch: normal;
	line-height: 40px;
	letter-spacing: 0px;
	color: #1c1f23;
    overflow: hidden;
    text-overflow:ellipsis;
    white-space: nowrap;
}
.item_right .item_text{
    width: 600px;
}
.item_right .item_text .text{
    font-family: MicrosoftYaHei;
	font-size: 16px;
	font-weight: normal;
	font-stretch: normal;
	line-height: 30px;
	letter-spacing: 0px;
    color: #2f2f2f;
    margin-top:30px;
    overflow : hidden;
    text-overflow: ellipsis;
    display: -webkit-box;
    -webkit-line-clamp: 8;
    -webkit-box-orient: vertical;
}
.intr_item-bottom{
    width: 100%;
    text-align: center;
}