* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}
html, body {
    width: 100%;
    height: 100%;
    overflow: hidden;
}
.loading {
    position: fixed;
    left: 0;
    top: 0;
    right: 0;
    bottom: 0;
    display: flex;
    text-align: center;
    align-items: center;
    background-color: #eaeaea;
    z-index: 9999;
}
.loading .txt {
    flex: 1;
}
.img-container {
    position: fixed;
    left: 0;
    top: 0;
    right: 0;
    bottom: 0;
    display: none;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    background: #fff;
    padding: 10px;
}
.img-container img {
    max-width: 100%;
    max-height: 80vh;
    cursor: pointer;
}
.img-container .countdown {
    margin-top: 10px;
    font-size: 14px;
    color: #666;
}