移动端h5页面编写样式重置

@charset "UTF-8";

/* stylelint-enable */
/* 重置样式 */
* {
    -webkit-tap-highlight-color: transparent;
    outline: 0;
}

body, h1, h2, h3, h4, h5, h6, hr, p, blockquote, dl, dt, dd, ul, ol, li, pre, form, fieldset, legend, button, input, textarea, th, td {
    margin: 0;
    padding: 0;
    vertical-align: baseline;
}

img {
    border: 0 none;
    vertical-align: top;
}

i, em {
    font-style: normal;
}

ol, ul {
    list-style: none;
}

input, select, button, h1, h2, h3, h4, h5, h6 {
    font-size: 100%;
    font-family: inherit;
}

table {
    border-collapse: collapse;
    border-spacing: 0;
}

a, a:visited {
    text-decoration: none;
    color: #333;
}

body {
    margin: 0 auto;
    background: #e8e8ed;
    font-size: 14px;
    font-family: -apple-system,Helvetica,sans-serif;
    line-height: 1.5;
    color: #666;
    -webkit-text-size-adjust: 100% !important;
  /*-webkit-user-select: none;
  user-select: none;*/
}

/* rem单位切换
---------------------------------------- */
/* html根元素大小
---------------------------------------- */
html {
    font-size: 20vw;
}

@media screen and (max- 320px) {
    html {
        font-size: 64px;
    }
}

@media screen and (min- 540px) {
    html {
        font-size: 108px;
    }
}

body {
    max-width: 540px;
    min-width: 320px;
}

原文： https://aotu.io/notes/2017/04/28/2017-4-28-CSS-viewport-units/?utm_source=tuicool&utm_medium=referral

https://jdc.jd.com/demo/ting/vw_rem_layout.html