移动端

* {
    outline: 0;
    margin: 0;
    padding: 0;
    vertical-align: baseline;
    -webkit-tap-highlight-color: transparent;
}

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 {
    text-decoration: none;
}

body {
    margin: 0 auto;
    height: 100vh;
    line-height: 1;
    text-size-adjust: 100% !important;
}

input[type="text"], textarea {
    appearance: none;
}

PC端

html, body, div, span, applet, object, iframe,
h1, h2, h3, h4, h5, h6, p, blockquote, pre,
a, abbr, acronym, address, big, cite, code,
del, dfn, em, img, ins, kbd, q, s, samp,
small, strike, strong, sub, sup, tt, var,
b, u, i, center,
dl, dt, dd, ol, ul, li,
fieldset, form, label, legend,
table, caption, tbody, tfoot, thead, tr, th, td,
article, aside, canvas, details, embed,
figure, figcaption, footer, header,
menu, nav, output, ruby, section, summary,
time, mark, audio, video, input {
    margin: 0;
    padding: 0;
    border: 0;
    font-size: 100%;
    font-weight: normal;
}

article, aside, details, figcaption, figure,
footer, header, menu, nav, section {
    display: block;
}

body {
    line-height: 1;
}

blockquote, q {
    quotes: none;
}

blockquote:before, blockquote:after,
q:before, q:after {
    content: none;
}

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

a {
    text-decoration: none;
    -webkit-backface-visibility: hidden;
}

li {
    list-style: none;
}

select,input,button{
    outline: none;
}

body {
    -webkit-text-size-adjust: none;
    -webkit-tap-highlight-color: rgba(0, 0, 0, 0);
}

button,input{
    outline: none
}

参考链接
京东 凹凸实验室 (opens new window)
Eric Meyer's Reset CSS (opens new window)