.about{padding:10px 20px;position:relative}.custom-wrapper{margin-bottom:20px;margin-top:20px}.custom-wrapper .input-wrapper{height:50px;line-height:50px}.custom-wrapper .input{width:30%;margin-right:60px}.add{margin-top:10px;text-align:right;padding-right:10px}.tip{color:#b52333}