*{
    margin: 0;
    padding: 0;
}
body{
    min-width: 1400px;
}
.center{
    width: 1400px;
    margin: 0 auto;
}
img{
    width: 100%;
    height: 100%;
}
a{
    color: inherit;
    text-decoration: none;
}
.nav{
    position: fixed;
    z-index: 9;
    top: 0;
    width: 100%;
    background-color: #fff;
    padding-bottom: 2px;
    border-bottom: 1px solid #e5e5e5;
}
.nav-logo{
    width: 240px;
    height: 60px;
    margin-top: 5px;
    padding: 10px 0;
}
.nav .center{
    display: flex;
    justify-content: space-between;
}
.nav-ul{
    list-style-type: none;
    display: flex;
    justify-content: center;
    font-size: 16px;
}
.nav-a{
    line-height: 20px;
    padding: 22px 20px;
    margin: 0 5px;
    margin-bottom: 2px;
    text-align: center;
}
.nav-a:hover{
    border-bottom: 2px solid #008837;
    margin-bottom: 0;
    color: #008837;
}
.title-center{
    text-align: center;
}
.title-center .title-zh {
    color: #008837;
}
.title-center .title-en {
    color: #666;
}
.title-left{
    text-align: left;
}
.title-zh{
    font-size: 26px;
    line-height: 40px;
}
.title-en{
    font-size: 14px;
    line-height: 30px;
}
.foot{
    padding: 60px 0 10px;
    background-color: #262626;
    color: #fff;
}
.foot-ul{
    display: flex;
    justify-content: space-between;
    list-style-type: none;
    font-size: 16px;
}
.foot-button{
    color: #999;
    margin-top: 60px;
    text-align: center;
    font-size: 14px;
}