*{
    padding: 0;
    margin: 0;
    box-sizing:border-box;
}
/*banner:*/
img.banner{
    width:100%;
    height:100%;
    object-fit: cover;
}
/*导航栏*/
.nav {
    width:100%;
    height: 70px;
    line-height: 70px;
    background-color: pink;
    display: flex;
    justify-content: space-around;
    margin-top: -4px;
}
.nav a {
    width: 16%;
    height: 100%;
    text-decoration: none;
    font-size: 23px;
    color:white;
    text-align: center;
}

.nav a.active{
    background-color: crimson;
    font-weight: bold;
}

.title {
    width: 100%;
    height: 50px;
    line-height: 50px;
    background-color: pink;
    color:white;
    margin: 20px auto;
    text-align: center;
    font-size: 40px;
}

.title::after {

    margin-left: 30px;
}

.tiele::before{
    
    margin-right: 30px;
}

.footer{
    width:100%;
    height: 90px;
    line-height: 90px;
    text-align: center;
    background-color: pink;
    font-size:30px;
    color: white;
}

img:hover{
    transition: all .3s;
    box-shadow: 6px 4px 6px slategray;
    cursor: pointer;
    transform: rotateZ(3deg);
    border: 20px solid pink;
}
body{
    background-color: ghostwhite;
}