body {
    background-color: #f4f5f5;
}

.container {
    display: flex;
    flex-direction: column;
    height: 100%;
}

/*标题*/
/*
background-image: url('../img/background.png');
*/

.band {
    display:flex;
    flex-direction: column;
    justify-content: center; /* 水平居中 */
    align-items: flex-start; /* 垂直居中 */
    width: 100%;
    height:400px;
    padding-left: 150px;
    text-align: center;
    background-image: linear-gradient(180deg,transparent,#fff),url('../img/band.png');
    background-repeat:repeat-x;
    background-position:top;
}

.band .name {
    font-size: 58px;
    color: #009fe9;
}



.band .slogan {
    font-size: 35px;
    color: #fff;
    padding: 5px;
    padding-right: 45px;
    background-image: url('../img/slogan.png');
    background-size: 220%;
    background-repeat:no-repeat;
    background-position:right;
}


body.Mobile  .band {
    height:200px;
    padding-left:5px;
}
body.Mobile .band .name {
    font-size: 35px;
}
body.Mobile .band .slogan {
    font-size: 20px;
    padding-left: 25px;
    margin-left: 25px;
}

@media (max-width: 900px) {
    .band {
        height:200px;
        padding-left:5px;
    }
    .band .name {
        font-size: 35px;
    }
    .band .slogan {
        font-size: 20px;
        padding-left: 25px;
        margin-left: 25px;
    }
}

/*导航栏*/
.navbar {
    float: right;
    width: 100%;
    height: 12%;

}

.navbar ul{
    display:flex;
    height: 100%;
    width: 100%;
}

.navbar ul li{
    float:left;
    display:inline;
    width: 25%;
    height :100%;
    background-color:  #009fe9;
    line-height :50px;
    text-align: center;
}

.navbar ul li:last-child{
    border-right: none;
}



.navbar ul a{
    display: block;
    width: 100%;
    height: 100%;
    color: #fff;
}

.navbar ul li:hover {
    background-color: #fff;
}
.navbar ul li:hover a{
    color: #009fe9;
}

.parent{
    display:flex;
    flex-direction: column;
    justify-content: center; /* 垂直居中 */
    align-items: center; /* 水平居中*/
    width: 100%;
    display: flex;
    justify-content: center;
}

.main {
    border-style: solid;
    border-radius: 5px;
    border-width: 1px;
    border-color: rgba(255,255,255,0.5);

    padding:70px;
    padding-top:30px;
    margin:30px 200px;
    max-width:90%;
    background-color: rgba(255,255,255,0.5);
}


body.Mobile .main {
        padding:10px;
        padding-top:30px;

        margin:30px auto;
    }

@media (max-width: 900px){
    .main {
        padding:10px;
        padding-top:30px;

        margin:30px auto;
    }
}

.back-to-top {
    position: fixed; /* 固定在屏幕右下角 */
    bottom: 20px; /* 距离底部20px */
    right: 20px; /* 距离右侧20px */
    width: 30px; /* 按钮宽度 */
    height: 30px; /* 按钮高度 */
    background-color: rgba(0, 0, 0, 0.5); /* 50%透明度的黑色 */
    color: white; /* 文字颜色 */
    text-align: center; /* 文字居中 */
    line-height: 30px; /* 文字垂直居中 */
    border-radius: 50%; /* 圆形按钮 */
    cursor: pointer; /* 鼠标悬停时显示手型 */
    transition: background-color 0.3s ease; /* 平滑过渡效果 */
}




.title {
    display: flex;
    flex-direction: column;
    justify-content: center; /* 垂直居中 */
    align-items: center; /* 水平居中*/
    width: 100%;

    margin-bottom:10px;
}

.title .p1 {
    color: #009ef9;
    font-size:20px;
}

.title .p2 {
    color: #999999;
}

/*容器 <div> - 需要定位下拉内容 */
.dropdown {
    width: 100%;
    height：100%;

    position: relative;
    display: inline-block;
}
/* 下拉内容 (默认隐藏) */
.dropdown-content {
    display: none;
    position: absolute;
	background-color: #f9f9f9;
	min-width: 160px;
	box-shadow:	0px 8px 16px 0px rgba(0,0,0,0.2);
}
/* 下拉菜单的链接 */
.navbar ul li:hover .dropdown-content a {
    color: #0073aa;
	padding: 12px 16px;
	text-decoration: none;
	display: block;
}
/* 鼠标移上去后修改下拉菜单链接颜色 */
.navbar ul li:hover .dropdown-content a:hover {
    color: #009efb;
    background-color: #f1f1f1
}
/*在鼠标移上去后显示下拉菜单 */
.dropdown:hover .dropdown-content {
	display: block;
}


body.Mobile .dropdown:hover .dropdown-content {
    	display: none;
    }

@media (max-width: 900px) {
    .dropdown:hover .dropdown-content {
    	display: none;
    }
}

/*版尾*/

.foot {
    display:flex;
    justify-content: space-between; /* 水平右对齐 */
    width: 100%;
    height: 350px;
    padding: 50px 170px;
    background-color: #393939;
}


.foot .name a{
    font-size:40px;
    color: #009ef9;
}

.foot  {
    color: #999999;
}

.foot .contact .p1{
    color: #fff;
    font-size: 20px;
    margin-bottom:30px;
}

.foot  .p4 img{
    width:200px;
    height:100%;
}

body.Mobile     .foot {
        display: none; /* 隐藏底部 */
    }

@media (max-width: 900px) {
    .foot {
            display: none; /* 隐藏底部 */
        }
}