html {
    height: 100%;
    font-size: 16px;
    background: #f4f4f4;
    color: #111111;
}

body {
    margin: 0;
}

:root {
    cursor: default;
    line-height: 2;
    overflow-wrap: break-word;
    -moz-tab-size: 4;
    tab-size: 4;
    -webkit-tap-highlight-color: transparent;
    -webkit-text-size-adjust: 100%;
    text-size-adjust: 100%;
    font-family: "Helvetica Neue", Helvetica, "PingFang SC", "Hiragino Sans GB",
    "Microsoft YaHei", "微软雅黑", Arial, sans-serif;
}

*,
::before,
::after {
    box-sizing: border-box;
    background-repeat: no-repeat;
}


::before,
::after {
    text-decoration: inherit;
    vertical-align: inherit;
}

h2 {
    font-size: 22px;
    text-align: center;
}

.main {
    padding: 50px 0;
    display: flex;
    justify-content: center;
    min-width: 800px;
}

.content {
    width: 720px;
    padding: 80px 80px 180px;
    border-radius: 5px;
    background: white;
}