* {
    margin: 0;
    padding: 0;
}

li {
    list-style: none;
}

a {
    text-decoration: none;
}

body {
    background: url(../images/body.jpg);
    font-family: 'kaiti';
    background-size: 100% 100%;
}

.container {
    width: 1200px;
    margin: 0 auto;
}

.header {
    width: 100%;
    height: 80px;
    line-height: 80px;
    text-align: center;
    font-size: 50px;
    font-family: 'kaiti';
}

.nav {
    height: 50px;
    justify-content: space-around;
    display: flex;
    line-height: 50px;
    color: white;
    font-size: 35px;
    align-items: center;
    background-color: rgba(0, 0, 0, .5);
    border-radius: 5px;
}

.nav li a {
    color: white;
}

.nav li a:hover {
    color: red;
    transition: all 0.5s;
}

.footer {
    text-align: center;
    height: 70px;
    background-color: rgba(0, 0, 0, .5);
    color: white;
    line-height: 70px;
    margin-top: 20px;
}