main .contents-center{text-align:left}main .contents-center h3{font-weight:bold;border-bottom:1px solid #d9d9d9;padding-bottom:5px;margin-bottom:10px}@media only screen and (min-width: 1025px){main .contents-center{width:1120px}}#sec_1{margin:60px 0 100px}#sec_1 .item{margin-top:30px}@media only screen and (min-width: 601px){#sec_1{margin:120px 0 150px}#sec_1 .item{margin-top:50px}}