*{
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    outline: none !important;
}
head {
    display: none;
}
html, body, #app {
    margin: 0;
    padding: 0;
    width: 100%;
    height: 100%;
    font-family: Helvetica Neue, Helvetica, PingFang SC, Hiragino Sans GB, Microsoft YaHei, SimSun, sans-serif;
    font-weight: 400;
    -webkit-font-smoothing: antialiased;
    -webkit-tap-highlight-color: transparent;
    background-color: #f5f5f5;
    font-size: 14px;
    overflow: hidden;
    position: relative;
}
body {
    display: block;
    margin: 8px;
}