:root{--main:red}*{margin:0;padding:0;box-sizing:border-box;border:none;outline:none;text-decoration:none;transition:.2s ease-in}::selection{background:var(--main);color:#fff}body{background:#000;color:#fff}section{padding-inline:200px}::-webkit-scrollbar{width:5px}::-webkit-scrollbar-thumb{background:var(--main)}::-webkit-scrollbar-track{background:#ccc}