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,
figcaption,
figure,
footer,
header,
hgroup,
menu,
nav,
section,
summary,
time,
mark,
audio,
video {
    margin: 0;
    padding: 0;
    border: 0;
    outline: 0;
    font-size: 100%;
    font: inherit;
    vertical-align: baseline;
}

*,
*:before,
*:after {
    -webkit-box-sizing: border-box;
    -moz-box-sizing: border-box;
    box-sizing: border-box;
    -webkit-tap-highlight-color: $normal-alpha-8;
}

/**
 * 1. Set default font family to sans-serif.
 * 2. Prevent iOS text size adjust after orientation change, without disabling
 *    user zoom.
 */
html {
    font-family: sans-serif; /* 1 */
    -ms-text-size-adjust: 100%; /* 2 */
    -webkit-text-size-adjust: 100%; /* 2 */
}

body {
    font-family: 'PingFang SC', 'Microsoft Yahei', 'Lucida Grande', 'Lucida Sans Unicode', Helvetica, Arial, Verdana, sans-serif;
    font-size: 14px;
    line-height: 1;
    background-color: #fff;
    position: static !important;
    text-rendering: optimizeLegibility;
    word-wrap: break-word;
    -webkit-user-drag: none;
    -webkit-text-size-adjust: none;
    -webkit-touch-callout: none;
    -webkit-user-select: none;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

ul,
ol {
    list-style-type: none;
}

b,
strong {
    font-weight: bold;
}

img {
    border: 0;
}

/**
 * 1. Correct font family not being inherited in all browsers.
 * 2. Correct font size not being inherited in all browsers.
 * 3. Address margins set differently in Firefox 4+, Safari 5, and Chrome.
 */
button,
input,
select,
textarea {
    font-family: inherit; /* 1 */
    font-size: 100%; /* 2 */
    margin: 0; /* 3 */
}

input,
textarea {
    -webkit-appearance: none; /* 消除输入框和按钮的原生外观 */
    /* 透明度设置为0，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) */
    -webkit-tap-highlight-color: rgba(0, 0, 0, 0);
}

textarea {
    overflow: auto; /* 1 */
    vertical-align: top; /* 2 */
    -webkit-appearance: none;
}

/**
 * Address Firefox 4+ setting `line-height` on `input` using `!important` in
 * the UA stylesheet.
 */
button,
input {
    line-height: normal;
}

/**
 * Address inconsistent `text-transform` inheritance for `button` and `select`.
 * All other form control elements do not inherit `text-transform` values.
 * Correct `button` style inheritance in Chrome, Safari 5+, and IE 8+.
 * Correct `select` style inheritance in Firefox 4+ and Opera.
 */
button,
select {
    text-transform: none;
}

/**
 * 1. Avoid the WebKit bug in Android 4.0.* where (2) destroys native `audio`
 *    and `video` controls.
 * 2. Correct inability to style clickable `input` types in iOS.
 * 3. Improve usability and consistency of cursor style between image-type
 *    `input` and others.
 */
button,
html input[type='button'],
input[type='reset'],
input[type='submit'] {
    -webkit-appearance: button; /* 2 */
    cursor: pointer; /* 3 */
}

/**
 * Re-set default cursor for disabled elements.
 */
button[disabled],
html input[disabled] {
    cursor: default;
}

/**
 * 1. Address `appearance` set to `searchfield` in Safari 5 and Chrome.
 * 2. Address `box-sizing` set to `border-box` in Safari 5 and Chrome
 *    (include `-moz` to future-proof).
 */
input[type='search'] {
    -webkit-appearance: textfield; /* 1 */
    -moz-box-sizing: content-box;
    -webkit-box-sizing: content-box; /* 2 */
    box-sizing: content-box;
}

/**
 * Remove inner padding and search cancel button in Safari 5 and Chrome
 * on OS X.
 */
input[type='search']::-webkit-search-cancel-button,
input[type='search']::-webkit-search-decoration {
    -webkit-appearance: none;
}

/**
 * Remove inner padding and border in Firefox 4+.
 */
button::-moz-focus-inner,
input::-moz-focus-inner {
    border: 0;
    padding: 0;
}

/**
 * 1. Remove default vertical scrollbar in IE 8/9.
 * 2. Improve readability and alignment in all browsers.
 */
/* Basic table styling */
table {
    width: 100%;
    border-spacing: 0;
    border-collapse: collapse;
}

table,
th,
td {
    border: 0;
}

th,
td {
    padding: 0;
    vertical-align: top;
}

th {
    font-weight: bold;
    text-align: left;
}

thead th {
    white-space: nowrap;
}

a {
    text-decoration: none;
    cursor: pointer;
}

a:active,
a:hover {
    outline: 0;
}