/* 弹窗样式 */
.modal {
    display: none;
    position: fixed;
    z-index: 9999;
    left: 0;
    top: 0;
    width: 100%;
    height: 100%;
    overflow: auto;
    background-color: rgba(0, 0, 0, 0.5);
}

.modal-content {
    position: absolute;
    left: 50%;
    top: 50%;
    transform: translate(-50%, -50%);
    background-color: #fefefe;
    padding: 5px;
    border: 1px solid #888;
    width: 869px;
    text-align: center;
}

.modal-close {
    color: #aaa;
    float: right;
    font-size: 17px;
    font-weight: bold;
    cursor: pointer;
    margin-right: 8px;
    margin-top: 2px;
}

.modal-close:hover,
.modal-close:focus {
    color: black;
    text-decoration: none;
    cursor: pointer;
}

.announcement {
    width: 100%;
}