* {
   margin: 0;
   padding: 0;
   box-sizing: border-box;
 }
 html, body, div, span, applet, object, iframe,
 h1, h2, h3, h4, h5, h6, p, blockquote, pre,
 a, abbr, acronym, address, big, cite, code,
 del, dfn, em, img, ins, kbd, q, s, samp,
 small, strike, strong, sub, sup, tt, var,
 b, u, i, center,
 dl, dt, dd, ol, ul, li,
 fieldset, form, label, legend,
 table, caption, tbody, tfoot, thead, tr, th, td,
 article, aside, canvas, details, embed, 
 figure, figcaption, footer, header, hgroup, 
 menu, nav, output, ruby, section, summary,
 time, mark, audio, video {
   margin: 0;
   padding: 0;
   border: 0;
   font-size: 100%;
   font: inherit;
   vertical-align: baseline;
 }
 /* その他のリセットスタイル */
 html {
   line-height: 1;
 }
 ol, ul {
   list-style: none;
 }
 blockquote, q {
   quotes: none;
 }
 blockquote::before, blockquote::after,
 q::before, q::after {
   content: '';
   content: none;
 }
 table {
   border-collapse: collapse;
   border-spacing: 0;
 }