html {
    font-size: 62.5%;
    -webkit-box-sizing: border-box;
    box-sizing: border-box;
    -webkit-text-size-adjust: 100%;
    word-break: normal;
    -moz-tab-size: 4;
    -webkit-tab-size: 4;
    -o-tab-size: 4;
    tab-size: 4;
    scroll-behavior: smooth;
}
body {
    overflow-x: hidden;
    background: url("../img/bg_widget.jpg") no-repeat center right fixed;
    background-size: cover;
    font-family: Verdana, "游ゴシック Medium", "Yu Gothic Medium", "游ゴシック体", YuGothic, sans-serif;
    font-weight: bold;
    font-size: 1.6rem;
}
img {
    max-width: 100%;
}
.cos_detail {
    text-align: center;
    line-height: 1.6;
}
.cos_detail .title {
    padding-top: 25px;
    color: #0e4bca;
    font-size: 1.8rem;
    font-weight: bold;
}
.cos_detail .back {
    width: 250px;
    margin: auto;
    margin-top: 20px;
    background: #0e4bca;
}
.cos_detail .back a {
    display: block;
    padding: 15px 0;
    color: #fff;
    font-weight: bold;
    text-decoration: none;
}