body{
    margin:auto;

}
img{

    min-width: 900px;
    width: 100%;
    object-fit: cover;  /* 重点，保持图片不变形，尺寸改变时裁切两边 */
    position: fixed;
    top: 0;
    left: 0;
    height:100%;
    zoom: 1;
    z-index: -1;
}

 .con{


    position: fixed;
    top: 0;
    left: 0;
    width:100%;
    height:100%;
    display: flex;
    flex-direction: column;
    align-items: center;
    /* min-width: 900px;
    min-height: 900px; */


    /* background-image 无法接收参数，弃用
    background-repeat: no-repeat;
    background-size: cover;
    background-position: center 0;
    background-image: url(../images/wall5.jpg);  */

}

.head{

    height: 80px;
    width: 100%;
    line-height: 80px;
    justify-content: space-between;
    display: flex;
    color: white;
    font-size:16px;
    background: linear-gradient(0deg,transparent 0%,transparent 0%,rgba(0,0,0,.2) 100%);
}
.item{

    text-align: center;
    display: inline-flex;
    justify-content: center;
    align-items: center;
    margin: 0px 50px 0 50px;
}

/* .item P:nth-child(2){

    font-weight: bold;
} */
.item P:nth-child(3),.item P:nth-child(4){

    text-indent: 10px;
}
.wea{

    display: flex;
    justify-content: center;
    align-items: center;
}
.text{

    margin-left: 5px;
    margin-right: 30px;
    color: white;
}



.icon-meun{

    cursor: pointer;
}
.set {
    display: flex;
    align-items: center;
}
.select_menu{
    border-radius: 5px;
    background-color: rgba(255, 255, 255);
    position: absolute;
    top: 60px;
    display: none;
    right: 50px;
    width: 120px;
    z-index: 100;
    overflow: hidden;

   }
.item_meun{
    line-height: 40px;
    transition: 0.2s;
    color: #535353;
    display: flex;
    font-size: 14px;
    justify-content: center;
    align-items: center;
    gap: 5px;/* 控制子元素之间的间距 */

}


.item_meun:hover{
    background-color: #ebebeb;
    cursor: pointer;
}
.item_meun:hover a{
    color: #1a1a1a;
}

.item_meun a{
    color: #535353;
    text-decoration: none;
}

.logout-form,
.logout-form button {
    margin: 0;
    padding: 0;
    border: 0;
    color: inherit;
    background: transparent;
    font: inherit;
    cursor: pointer;
}



/* 搜索框部分 */