#s1_wrap {
    float: left;
    width: 30%;
    height: 55px;
    position: absolute;
    bottom: 0;
    left: 50%;
    margin-left: -15%;
}
.s1_btn {
    float: left;
    width: 30%;
    height: 100%;
    text-align: center;
    margin-right: 3%;
    background-color: rgba(255, 255, 255, 0.9);
}

.s1_btn:nth-child(3) {
    margin-right: 0;
}

#s2_main_title{
    margin-bottom: 0;
    font-size: 33px;
}

.s1_btn a {
    font-size: 23px;
    font-weight: 500;
    color: #4e3c3c;
    line-height: 55px;
}

mark {
    background-color: #ffe394;
    padding: 0 5px;
    box-sizing: border-box;
    font-weight: 500;
}