*,:before,:after{box-sizing:border-box}body{-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale;margin:0}html{transition:background-color .3s,color .3s}::-webkit-scrollbar{width:6px;height:6px}::-webkit-scrollbar-track{background:0 0}::-webkit-scrollbar-thumb{background:silver;border-radius:3px}::-webkit-scrollbar-thumb:hover{background:#a0a0a0}