body {
    background-image: url("../static/betnew2/image/bg_51231.jpg"); 
    background-repeat: no-repeat; 
    background-size: cover;
    background-attachment: fixed;
    min-height: 100vh;
    margin: 0;
    padding: 0;
}

.banner-image {
    width: 100%;
    height: 350px;
    background-image: url("../static/betnew2/image/worldcup_banner.jpg");
    background-size: cover;
    background-position: center center;
    background-repeat: no-repeat;
}

.center-image {
    display: flex;
    justify-content: center;
    margin-top: 15px;
}

.center-image img {
    width: 120px;
    height: 120px;
}

.box {
    display: flex;
    justify-content: center;
    margin-top: 0px;
}

.middleBox {
    width: 71%;
    max-width: 502px;
    margin-top: 0px;
}

.btnBox {
    width: 100%;
    text-align: center;
}

.btnBox1 {
    width: 100%;
    text-align: center;
}

#btn {
    margin-top: 5px;
    cursor: pointer;
}

#btn img {
    width: 60%;
    height: 60%;
    margin-top: 0px;
}

#btn1 img {
    width: 60%;
    height: 60%;
    margin-top: 5px;
}

footer {
    text-align: center;
    padding: 5px;
    font-size: 13px;
    position: fixed;
    bottom: 0;
    left: 0;
    right: 0;
    background: transparent;
}

@media (max-width: 768px) {
    .banner-image {
        height: 200px;
        background-image: url("../static/betnew2/image/worldcup_banner_mobile.jpg");
        background-size: cover;
        background-position: center center;
    }
    footer {
        position: static;
        margin-top: 50px;
        padding: 10px;
    }
}