/*版心*/
.container {
    width: 1200px;
    margin: 0 auto;
}
/*顶部导航*/
.header {
    width: 100%;
    min-width: 1200px;
    height: 100px;
    background-color: #484848;
}

.header__top {
    display: flex;
    justify-content: space-between;
    line-height: 100px;
}

.nav {
    display: flex;
    width: 272px;
    justify-content: space-between;
    align-items: center;
}

.nav__btn {
    width: 136px;
    height: 54px;
    text-align: center;
    line-height: 54px;
    border-radius: 27px;
    color: #FFF;
    cursor: pointer;
    border: 2px solid transparent;
}

/*鼠标点击导航样式*/
.nav__btn1 {
    border-color: #FFF;
    font-weight: bold;
}

/*footer*/
.footer{
    display: flex;
    flex-direction: column;
    align-items: center;
    width: 100%;
    height: 141px;
    background: #484848;
    justify-content: space-around;
}
.footer .footer_box{
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    grid-gap: 30px;
    color: #999999;
    font-size: 14px;
}
.footer .footer_box1{
    color: #999999;
    font-size: 14px;
}