body{
    background-color: #f2f2f2;
}
a:hover{text-decoration: none;}
header{
    width: 100%;
    background-color: #003366;
    color: white;
}
.banner{
    width: 100%;
    height: 400px;
    background-image: url(../images/banner.jpg);
    background-size: cover;
    position: relative;
}
.banner>div{
    position: absolute;
    color: white;
    top: 40%;
    left: 10%;
}
.banner>div h1{
    font-size: 60px;
}
/* .zhuti{margin-left: 200px;} */
.zhuti>div{
    width: 100%;
    display: flex;
    align-items: center;
    justify-content: space-between;
    background-color: #e2e2e2;
    color: black;
}
.zhuti div h3{
    border-left: 5px solid #6699CC;
    padding-left: 10px;
}
.zhuti div p{
    font-size: 18px;
    margin-top: 20px;
}
.jisong .jieshao{
    width: 600px;
}
.zhuti div a{
    color: black;
    border: 1px solid rgb(27, 150, 199);
    padding: 5px 20px;
    border-radius: 20px;
    background-color: white;
    font-size: 18px;
    display: inline-block;
    margin-top: 10px;
}
.erweima{
    background-color: #f2f2f2;
    position: fixed;
    right: 0;
    top: 35%;
}
.erweima>div{
    width: 200px;
    height: 200px;
    border: 1px solid black;
    margin-bottom: 30px;
    display: flex;
    justify-content: center;
    align-items: center;
}
.erweima>div img{
    width: 100%;
    height: 100%;
}
.kefu{
    position: fixed;
    right: 0;
    bottom: 0;
}
.kefu>div{
    position: relative;
}
.kefu>img{
    position: absolute;
    margin-top: -520px;
    margin-left: -150px;
    display: none;
}
.kefu:hover img{
    display: block;
}
.kefu a{
    display: flex;
    align-items: center;
    border: 2px solid skyblue;
    background-color: white;
    padding: 5px 10px;
    border-radius: 30px;
}
.kefu a img{
    width: 50px;
    height: 50px;
    margin-right: 10px;
}
.kefu a p{
    margin: 0;
}