html,body{
    margin: 0;
    padding: 0;
    font-size: 16px;
    color: #333;
}
a{
    color: inherit;
    text-decoration: none;
}
a:hover{
    opacity: 0.7;
}
.container{
    width: 1200px;
    margin: 0 auto;
}
.header{
    height: 122px;
    background-color: #fff;
}
.header .container{
    display: flex;
    align-items: center;
    line-height: 122px;
}
.header-nav{
    margin-left: auto;
    font-size: 16px;
}
.header-nav a{
    margin-left: 16px;
}
.logo{
    font-size: 17px;
    font-weight: bolder;
}
.footer{
    background-color: #000;
    text-align: center;
    color: #fff;
    padding: 20px;
}