*{box-sizing:border-box;margin:0;padding:0}button{font:inherit;color:inherit;cursor:pointer;-webkit-tap-highlight-color:#0000;background-color:#0000;border:none}body{color:#fff;background-color:#000;margin:42px 24px 24px;font-family:sans-serif;font-size:1.2rem}button{border:1px solid #fff;border-radius:8px;margin-top:6px;padding:4px 12px;transition-property:background-color,color;transition-duration:.1s}button:active{color:#000;background-color:#fff}