ul, li {
    list-style: none;
    padding: 0;
    margin: 0;
}

html, body {
    width: 100%;
    height: 100%;
    font-size: 14px;
    overflow: hidden;
}

.container {
    position: relative;
    padding: 0;
    max-width: 640px;
    min-width: 320px;
    margin: 0 auto;
    height: 100%;
    background-color: #000;
}

.content {
    position: absolute;
    left: 0;
    top: 52%;
    color: #f4e1af;
    font-size: 28px;
    width: 100%;
    display: flex;
    flex-direction: column;
    align-items: center;
    padding: 0 30px;
    word-break: break-all;
}
.relativeContent{
    position: relative;
    background: url(https://yindun-images.oss-cn-shanghai-finance-1-pub.aliyuncs.com/pic/lifeoffline.png) no-repeat left top;
    width: 100%;
    height: 100%;
    background-size: cover;
}

@media (max-width: 320px) {
    .content {
        font-size: 20px;
    }
}