1px * 0.02

1rem = 50px;

转换>

<script type='text/javascript'>// 定义rem的值，1rem=100px! function () {function a() {document.documentElement.style.fontSize = document.documentElement.clientWidth / 750 * 10 / 16 * 1000 +"%"}var b = null;window.addEventListener("resize", function () {clearTimeout(b);b = setTimeout(a, 300)}, !1);a()}(window);</script>

可以写完之后再在线转换 ==>/front/rem