//HTML5の新要素にCSSを適用する
document.createElement("section");
document.createElement("article");
document.createElement("aside");
document.createElement("header");
document.createElement("footer");
document.createElement("nav");
document.createElement("dialog");
document.createElement("figure");
document.createElement("audio");
document.createElement("video");
document.createElement("embed");
document.createElement("m");
document.createElement("meter");
document.createElement("time");
document.createElement("canvas");
document.createElement("command");
document.createElement("datagrid");
document.createElement("details");
document.createElement("datalist");
document.createElement("datatemplate");
document.createElement("rule");
document.createElement("nest");
document.createElement("event-source");
document.createElement("output");
document.createElement("progress");