/* header */
.search{
    width: 40rem;
    height: 3.1rem;
    background-color: var(--bg-primary-color);
    border-radius: 1.8rem;
    display: flex;
    align-items: center;
    float: right;
    margin-bottom: 1rem;
}

.search .iconfont{
    display: inline-block;
    margin-left: 1.5rem;
}

.search input{
    border: none;
    background-color: var(--bg-primary-color);
    flex: 1;
    margin:0 1.5rem;
}

.search .search_btn{
    width: 10rem;
    height: 3.1rem;
    border: none;
    color: white;
    background-color: var(--theme-primary-color);
    border-top-right-radius: 1.8rem;
    border-bottom-right-radius: 1.8rem;
}

nav{
    clear: both;
    box-sizing: border-box;
}

.nav, ul{
    display: flex;
    align-items: center;
    box-sizing: border-box;
}

nav img{
    margin-right: 5.8rem;
    width: 18rem;
}

ul .nav_item{
    padding: 2.2rem 2.6rem;
    font-size: 1.8rem;
    animation: all 1s;
    cursor: pointer;
    font-weight: bold;
}

ul .nav_item:hover{
    background-color: var(--theme-primary-color);
    color: white;
}

ul .cur{
    background-color: var(--theme-primary-color);
    color: white;
}