body{color:#eee;background-color:#222;font-family:sans-serif;line-height:1.5;margin:auto;padding:0 25px;max-width:800px}header{border-bottom:1px solid #eee;margin:auto}footer{border-top:1px solid #eee;margin:auto}a{color:#f3f;text-decoration:none}button{background-color:#444;border:none;border-radius:.5rem .5rem 0 0;font-size:large}img{max-height:400px;height:auto;max-width:100%;display:block;margin:auto}