.if_d {
    background: white;
    width: 100%;
    margin: 0 auto;
}

.if_d .cl {
    overflow: hidden;
    width: 100%;
}

.demo {
    overflow: hidden;
    height: 215px;
    width: 100%;
}

.tab {
    border-collapse: collapse
}

.tab td {
    border: 1px #f0ecec solid;
}

.tab .list {
    border: 1px #f0ecec solid;
    text-align: center;
    background: #fdf7f7;
}

.tab .lf {
    text-align: left;
    padding-left: 10px;
}

.btn {
    background: #b5170e;
    color: #fff;
    font-size: 14px;
    font-weight: normal;
    width: 80px;
    line-height: 30px;
    margin-bottom: 10px;
    border: 0px;
    display: block;
    cursor: pointer;
    text-align: center;
}