@media screen and (min-width: 1200px) and (max-width: 1680px) {
    .main_middle,
    .norm_main {
        width: 100%;
        padding-left: 10px;
        padding-right: 10px;
    }
}
@media(max-width: 1600px){
	.about_main .about_right .ab_r_list .ab_r_list_item {
	    width: 33.33%;
	    padding-right: 11px;
	}
	.about_main .about_right .ab_r_diamond .ab_r_diamond_item {
	    width: 220px;
	    height: 135px;
	    flex-direction: column;
	    border: 1px solid rgba(0, 0, 0, 0.1);
	    border-left: none;
	    background-color: #fff;
	    cursor: pointer;
	    transition: background-color 0.3s linear;
	    text-align: center;
	}
	.about_main .about_right{
		position: static;
	}
	.about_main {
	    position: relative;
	}
	.about_main .about_right .ab_r_diamond {
	    position: absolute;
	    left: 0;
	    border-left: 1px solid rgba(0, 0, 0, 0.1);
	    width: 50%;
	    bottom: 0;
	}
	.about_main .about_right .ab_r_list{
		margin-bottom: 0;
	}
	.about_main .about_left img {
	    height: 80%;
	    width: 100%;
	}
	.about_main .about_right .ab_r_diamond .ab_r_diamond_item img {
	    margin-bottom: 10px;
	}
}
@media(max-width: 1200px){
	.norm_main .norm_item {
	    width: 46%;
	    height: 180px;
	    margin-bottom: 50px;
	    padding: 0 30px;
	    border-top-left-radius: 30px;
	    border-bottom-right-radius: 30px;
	    background-color: #fff;
	    transition: background-color 0.3s linear;
	    cursor: pointer;
	}
}