MediaWiki:Common.cssのソースを表示新しいページはコチラ

/* ここに記述したCSSはすべての外装に反映されます */
body {
 font-size:18px; 
 font-family:'ヒラギノ角ゴ Pro W3','Hiragino Kaku Gothic Pro','メイリオ',Meiryo,'ＭＳ Ｐゴシック',sans-serif;
 white-space: pre-line;
 white-space: pre;           /* CSS 2.0 */
 white-space: pre-wrap;      /* CSS 2.1 */
 white-space: pre-line;      /* CSS 3.0 */
 white-space: -pre-wrap;     /* Opera 4-6 */
 white-space: -o-pre-wrap;   /* Opera 7 */
 white-space: -moz-pre-wrap; /* Mozilla */
 white-space: -hp-pre-wrap;  /* HP Printers */
 word-wrap: break-word;      /* IE 5+ */
}

pre {
 font-size:1em; 
 font-family:'ヒラギノ角ゴ Pro W3','Hiragino Kaku Gothic Pro','メイリオ',Meiryo,'ＭＳ Ｐゴシック',sans-serif;
 white-space: pre-line;
 width: 1000px;
 white-space: pre;           /* CSS 2.0 */
 white-space: pre-wrap;      /* CSS 2.1 */
 white-space: pre-line;      /* CSS 3.0 */
 white-space: -pre-wrap;     /* Opera 4-6 */
 white-space: -o-pre-wrap;   /* Opera 7 */
 white-space: -moz-pre-wrap; /* Mozilla */
 white-space: -hp-pre-wrap;  /* HP Printers */
 word-wrap: break-word;      /* IE 5+ */
}

pre.mw-geshi mw-content-ltr {
 font-size:1em; 
 font-family:'ヒラギノ角ゴ Pro W3','Hiragino Kaku Gothic Pro','メイリオ',Meiryo,'ＭＳ Ｐゴシック',sans-serif;
 white-space: pre-line;
 width: 1000px;
 white-space: pre;           /* CSS 2.0 */
 white-space: pre-wrap;      /* CSS 2.1 */
 white-space: pre-line;      /* CSS 3.0 */
 white-space: -pre-wrap;     /* Opera 4-6 */
 white-space: -o-pre-wrap;   /* Opera 7 */
 white-space: -moz-pre-wrap; /* Mozilla */
 white-space: -hp-pre-wrap;  /* HP Printers */
 word-wrap: break-word;      /* IE 5+ */
}