reset.css

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,
hgroup,
menu,
nav,
output,
ruby,
section,
summary,
time,
mark,
audio,
video {
margin: 0;
padding: 0;
border: 0;
font-size: 100%;
font: inherit;
vertical-align: baseline;
background: transparent;
}

/* HTML5 display-role reset for older browsers */

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

body {
line-height: 1;
}

:focus {
outline: 1;
}

i,
cite,
em,
var,
address,
dfn {
font-style: normal;
}

ol,
ul {
list-style: none;
}

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

caption,
th {
text-align: left;
font-weight: normal;
}

img {
border-style: none;
display: inline-block;
vertical-align: middle;
}

a,
a:active,
a:hover,
a:focus,
a:visited {
text-decoration: none;
}

/* 表单样式 */

input,
textarea,
select,
button {
vertical-align: baseline;
*vertical-align: middle;
-webkit-border-radius: 0;
border-radius: 0;
}

table input,
table button {
*overflow: auto;
}

a[href],
input[type='submit'],
input[type='image'],
input[type='reset'],
input[type='button'],
label[for],
select,
button {
cursor: pointer;
-webkit-appearance: button;
}

/*
* 移动端样式
* 禁用长按页面时的弹出菜单(iOS下有效) ,img和a标签都要加
* 去掉点击链接和文本框对象时默认的灰色半透明覆盖层(iOS)或者虚框(Android)
* @Last Modified time: 2017-12-06 09:54:02
*/

a,
img {
-webkit-touch-callout: none;
}

a,
button,
input,
textarea {
-webkit-tap-highlight-color: rgba(0, 0, 0, 0);
background: none;
outline: none;
resize: none;
-webkit-appearance: none;
-webkit-touch-callout: none;
white-space: pre-wrap;
word-wrap: break-word;
border: none;
}

/* base.css */

* {
-webkit-box-sizing: border-box;
-moz-box-sizing: border-box;
box-sizing: border-box;
}

body,
textarea,
input,
button,
select,
keygen,
legend {
font: 14px/1 -apple-system, "PingFang SC", "Microsoft YaHei", "Helvetica Neue", "Helvetica", "STHeiTi", "sans-serif";
color: #333;
outline: 0;
}

body {
background: #fff;
}