.mail_txt {
 text-align: center;
 font-family: "ヒラギノ角ゴ Pro W3", "Hiragino Kaku Gothic Pro", "メイリオ", Meiryo, Osaka, "ＭＳ Ｐゴシック", "MS PGothic", sans-serif;
 font-size: 14px;
 font-weight: bold;
 line-height: 150%;
}

#detail {
 clear: both;
 width: 566px;
 margin-top: 20px;
 margin-right: auto;
 margin-left: auto;
 margin-bottom: 20px;
}