.rich_box{
    text-align:center;
}
.clr{
    clear:both;
}
.rich-detail{
    text-align: center;
}

.rich-detail img{
    max-width:90%;
    height:auto;
}
.rich_box a{
    margin-top:10px;
}
@media screen and (max-width: 250px) {
    .rich_box a{
        display:block;
        float:left;
        min-width:246px;
        width:100%;
        height:101px;
    }
}
@media screen and (min-width:251px) and (max-width:1000px)
{
    .rich_box a{
        display:block;
        float:left;
        width:50%;
    }
	.rich_box a img{
		width:100%;
	}

    .rich_box_index a img{
        width:50%;
        display:block;
        float:left;
    }
    .rich_box_index{
        padding-top: 5px;
        padding-bottom: 5px;
       /* background: #fa4e4e;*/
    }
}
@media screen and (min-width:1001px){
    .rich_box a{
        display:block;
        float:left;
        min-width:246px;
        width:25%;
        height:101px;
    }
    .rich_box_index a img{
        width:20%;
        display:block;
        float:left;
    }
    .rich_box_index{
        padding-top: 5px;
        padding-bottom: 5px;
        background: #fa4e4e;
    }
}