*,:before,:after{box-sizing:border-box}body{margin:0;padding:0;font-weight:600}input,select,textarea,button{font-weight:600}@media (width<=768px){body,input,select,textarea,button{font-size:16px}}@media (width<=480px){body{font-size:17px}h1{font-size:1.6rem}h2{font-size:1.3rem}h3{font-size:1.1rem}input,select,textarea,button,nav,.menu,.sidebar{font-size:16px}}