body {
    margin: 0px;
}
div{
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
}
.top {
    margin-top: 2rem;
    justify-content: space-between;
    align-items: flex-start;
    margin-left: 5rem;
    flex-direction: row;
    width: 29rem;
    margin-bottom: 5rem;
}
.top .logo {
    width: 11rem;
    margin-top: 2rem;
}
.top .logo2 {
    width: 7rem;
}
.content{
    margin-top: 5rem;
    margin-bottom: 3rem;
}
.title{
    flex-direction: row;
    margin-bottom: 1rem;
    justify-content: space-between;
    width: 28rem;
    font-size: 1.3rem;
}
.title label {
    color: #00000061;
}
.title a{
    text-decoration: unset;
}

#qrcodeBg{
    position: absolute;
    width: 100%;
    height: 80%;
    top: 15%;
    background: #FFF;
    display: none;
}

#qrcode img {
    position: absolute;
    top: 15%;
}

#qrcodeBg .text {
    margin-top: 7rem;
    font-size: 2rem;
    color: #969191;
    margin-left: -1rem;
}

.content input[type="button"]{
    font-size: 1.8rem;
}

#myModal.modal {

    position: fixed;
    z-index: 1; /* 位于顶层 */
    left: 0;
    top: 0;
    width: 100%; /* 全屏宽度 */
    height: 100%; /* 全屏高度 */
    overflow: auto; /* 允许滚动 */
    background-color: rgb(0,0,0); /* 背景颜色带些透明度 */
    background-color: rgba(0,0,0,0.9); /* 透明度 */
}
#myModal.modal .modal-content {
    width: 100%;
}
#myModal.modal.noShow{
    display: none; /* 默认隐藏模态框 */
}
#myModal.modal-content {
    margin: auto;
    display: block;
    width: 100%; /* 图片宽度 */
    max-width: 700px;
}
#myModal .close {
    position: fixed;
    top: 15px;
    right: 35px;
    color: #a1a1a1;
    font-size: 40px;
    font-weight: bold;
    transition: 0.3s;
}
#myModal .close:hover,
#myModal .close:focus {
    color: #bbb;
    text-decoration: none;
    cursor: pointer;
}

.image-update{
    position: absolute;
    right: 0rem;
    top: 0rem;
    font-size: 1.5rem;
    display: none;
    color: #4d4d4d;
    background-color: #cfcfcf;
    padding: 0.3rem;
    min-width: 3rem;
    text-align: center;
}

.first-image{
    display: none;
    width: 100%;
    height: 100%;
    position: absolute;
}