.main{
    padding-top: 30px;
    width: 1200px;
    margin: auto;
}

.mian_img{
    width: 1200px;
	height: 260px;
}
.mian_img img{
    width: 1200px;
	height: 260px;
}

.main_item_box{
    margin-top: 30px;
}

.main_item{
    width: 277px;
	height: 60px;
	background-color: #ffffff;
    border: solid 1px #dadada;
    float: left;
    font-size: 24px;
    text-align: center;
	font-weight: normal;
	font-stretch: normal;
	line-height: 60px;
	letter-spacing: 0px;
    color: #000000;
    margin-right: 30px;
    margin-bottom: 30px;
}

.main_item_box span:hover{
    background-color:rgb(52, 115, 199);
}
.ns{
    margin-right: 0px;
}