.left{
    width: 798px;
    height:220px;
    background-image: none;
    text-align: center;
}
.banner img{
    margin: auto;
    padding-top: 0px;
}
a.banner_button {
    background-color: rgb(254, 199, 49);
    box-shadow: 0px 4px 0px 0px rgba(20, 45, 82, 0.67);
    display: inline-block;
    position: relative;
    top:-80px;
    margin: 0px 31px;
    width: 117px;
    height: 31px;
    font-size: 14px;
    font-family: "MFLangQian_Noncommercial";
    color: rgb(255, 255, 255);
    font-weight: bold;
    line-height: 31px;
    border-radius:25px;
}
a.banner_button:hover {
    background-color: rgb(206, 161, 38);
}