*,*::before,*::after{box-sizing:border-box}html{font-size:16px}body,h1,h2,h3,p,ul,ol{margin:0}ul,ol{padding:0;list-style:none}button,input,select,textarea{font:inherit}button{cursor:pointer}img,canvas,video{display:block;max-width:100%}a{color:inherit;text-decoration:none}