H 5移動端remレイアウトは750 px設計原稿案を復元する.

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@charset "utf-8";
*{margin:0;padding:0;}
/*     */
/**** 1rem = 100px  750    ****/
header,footer {height: 1rem;background: blue;font-size: 0.4rem;text-align: center;line-height: 1rem;color:#fff;}
section{height: 3rem;background: red;font-size: 0.4rem;text-align: center;line-height:3rem;color:#fff;}