*{box-sizing:border-box}html,body{max-width:100%;overflow-x:hidden}body{margin:0}img{max-width:100%;height:auto}a{color:inherit}input,select,textarea,button{font:inherit}textarea{resize:vertical}.app-main{padding:20px 18px}@media (max-width:768px){.app-main{padding:14px 12px}}