body, html {
    margin: 0;
    padding: 0;
    height: 100%;
    overflow: hidden;
}
.navbar-navgation {
    width: 100%;
    background: rgba(34, 207, 255, 0.95);
    top: 0;
    z-index: 1000;
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
    border: none;
}
.fullscreen-bg {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: -1;
    overflow: hidden;
}
.fullscreen-bg img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}



#divb {
    background-color: red;
    width: 70%;
    margin: 10px auto;
    position: relative;
    top: 50px;
}

img {
    width: 100%;
}

img src {
    width: 140px;
}

.carousel-caption div {
    color: yellow;
    font-family: "微软雅黑";
}

.carousel-caption {
    bottom: 35%;
}

#div6 {
    width: 40%;
    margin: 10px auto;
    position: absolute;
    top: 800px;
    left: 650px;
}

#divc {
    width: 30px;
    height: 20px;
    background-color: red;
    margin: 10px auto;
}

.divd {
    width: 40%;
    border: 2px solid red;
    margin: 10px auto;
    height: 300px;
}

.list-group {
    width: 70%;
    margin: 10px auto;
}

.badge {
    color: red;
    text-shadow: 3px 4px 5px green;
    background-color: white;
}