@media screen and (max-width:720px){
 #web_contact{
           background: #ffffff;
		    /* margin-top: -3rem; */
		    margin: 0px 0px 100px 0px;
		    min-height: 68vh;
     }
     .contact_h{
	       /* height: 14.5px;*/
		    font-size: 20px;
		    font-family: Arial, Arial-Regular;
		    font-weight: 400;
		    text-align: left;
		    color: #333333;
		    margin-left: 50px;
     }
     .contact_addr{
    	    /*width: 140px;*/
		    /*height: 38.5px;*/
		    font-size: 9px;
		    font-family: Arial, Arial-Regular;
		    font-weight: 400;
		    text-align: left;
		    color: #444444;
		    line-height: 30px;
		    margin-left: 50px;
     }
 }
 @media screen and (min-width:721px){
#web_contact{
           background: #ffffff;
		    /* margin-top: -3rem; */
		    margin: 100px 0px 100px 0px;
		     min-height: 74vh;
     }
     .contact_h{
	        height: 14.5px;
		    font-size: 20px;
		    font-family: Arial, Arial-Regular;
		    font-weight: 400;
		    text-align: left;
		    color: #333333;;
		    margin-left: 105px;
		    margin-bottom: 50px;
     }
     .contact_addr{
    	   /* width: 140px;*/
		    height: 38.5px;
		    font-family: Arial, Arial-Regular;
		    font-weight: 400;
		    text-align: left;
		    color: #444444;
		    line-height: 30px;
		    margin-left: 105px;
		            line-height: 30px;
        margin-left: 105px;
        width: 355px;
        height: 140px;
        font-family: Source Han Sans CN;
        font-weight: 400;
        font-size: 18px;
        color: #333333;
     }
}