.history_con{display:block;width:900px;margin:100px auto;text-align:center}.history_title{position:relative;font-size:32px;font-weight:700;margin-bottom:20px}.history_title:after{content:"";position:absolute;left:47.8%;bottom:54px;width:40px;height:3px;background-color:#00aeff}.history_img{width:100%;border-top:2px solid #d3d3d3}.mobile_history_con{display:none}@media (max-width:810px){.history_con,.history_title,.history_title:after{display:none}.mobile_history_con{display:block;width:85vw;margin:100px auto;text-align:start}.mobile_history_title{text-align:center;font-size:32px;font-weight:700;margin-bottom:20px}}