@charset "utf-8";
/***初始化***/
/**浏览器重置样式***/
html {
  color: #000;
  background: #fff;
  overflow-y: scroll;
  font-size: 37.5px;
  -webkit-overflow-scrolling: touch;
  -webkit-text-size-adjust: 100%;
  -ms-text-size-adjust: 100%;
}
html * {
  outline: none;
  -webkit-text-size-adjust: none;
  -webkit-tap-highlight-color: rgba(0, 0, 0, 0);
}
html,
body {
  font-family: "Helvetica", '黑体';
  line-height: 1.5;
}
/* HTML5 display definitions
   ========================================================================== */
/**
 * Correct `block` display not defined for any HTML5 element in IE 8/9.
 * Correct `block` display not defined for `details` or `summary` in IE 10/11
 * and Firefox.
 * Correct `block` display not defined for `main` in IE 11.
 */
article,
aside,
details,
figcaption,
figure,
footer,
header,
hgroup,
main,
menu,
nav,
section,
summary {
  display: block;
}
/**
 * 1. Correct `inline-block` display not defined in IE 8/9.
 * 2. Normalize vertical alignment of `progress` in Chrome, Firefox, and Opera.
 */
audio,
canvas,
progress,
video {
  display: inline-block;
  /* 1 */
  vertical-align: baseline;
  /* 2 */
}
/**
 * Prevent modern browsers from displaying `audio` without controls.
 * Remove excess height in iOS 5 devices.
 */
audio:not([controls]) {
  display: none;
  height: 0;
}
/**
 * Address `[hidden]` styling not present in IE 8/9/10.
 * Hide the `template` element in IE 8/9/10/11, Safari, and Firefox < 22.
 */
[hidden],
template {
  display: none;
}
/* Links
   ========================================================================== */
/**
 * Remove the gray background color from active links in IE 10.
 */
a {
  border: none;
  background-color: transparent;
  -webkit-tap-highlight-color: rgba(255, 0, 0, 0);
  -webkit-tap-highlight-color: transparent;
  outline: none;
}
/**
 * Improve readability of focused elements when they are also in an
 * active/hover state.
 */
a:visited a:hover,
a:active {
  background-color: transparent;
  -webkit-tap-highlight-color: rgba(0, 0, 0, 0);
  -webkit-tap-highlight-color: transparent;
  outline: none;
}
/* Text-level semantics
   ========================================================================== */
/**
 * Address styling not present in IE 8/9/10/11, Safari, and Chrome.
 */
abbr[title] {
  border-bottom: 1px dotted;
}
/**
 * Address style set to `bolder` in Firefox 4+, Safari, and Chrome.
 */
b,
strong {
  font-weight: bold;
}
/**
 * Address styling not present in Safari and Chrome.
 */
dfn {
  font-style: italic;
}
/* 内外边距通常让各个浏览器样式的表现位置不同 */
body,
div,
dl,
dt,
dd,
ul,
ol,
li,
h1,
h2,
h3,
h4,
h5,
h6,
pre,
code,
form,
fieldset,
legend,
input,
textarea,
p,
blockquote,
th,
td,
hr,
button,
article,
aside,
details,
figcaption,
figure,
footer,
header,
hgroup,
menu,
nav,
section {
  margin: 0;
  padding: 0;
}
input,
select,
textarea {
  font-size: 100%;
}
/* 去掉各 Table  cell 的边距并让其边重合 */
table {
  border-collapse: collapse;
  border-spacing: 0;
}
/* 去除默认边框 */
fieldset,
img {
  border: 0;
}
/* 去掉 firefox 下此元素的边框 */
abbr,
acronym {
  border: 0;
  font-variant: normal;
}
/* 一致的 del 样式 */
del {
  text-decoration: line-through;
}
address,
caption,
cite,
code,
dfn,
em,
th,
var {
  font-style: normal;
  font-weight: 500;
}
/* 去掉列表前的标识, li 会继承 */
ol,
ul {
  list-style: none;
}
/* 对齐是排版最重要的因素, 别让什么都居中 */
caption,
th {
  text-align: left;
}
/* 来自 yahoo, 让标题都自定义, 适应多个系统应用 */
h1,
h2,
h3,
h4,
h5,
h6 {
  font-size: 100%;
  font-weight: 500;
}
q:before,
q:after {
  content: '';
}
/* 统一上标和下标 */
sub,
sup {
  font-size: 75%;
  line-height: 0;
  position: relative;
  vertical-align: baseline;
}
sup {
  top: -0.5em;
}
sub {
  bottom: -0.25em;
}
/* 正常链接 未访问 */
/* 鼠标悬停 */
a:hover {
  text-decoration: underline;
}
/* 默认不显示下划线，保持页面简洁 */
ins,
a {
  text-decoration: none;
}
/*quick function*/
.none {
  display: none;
}
.hidden {
  visibility: hidden;
}
a:focus {
  outline: 0;
  text-decoration: none;
}
a.focus {
  outline: 0;
  text-decoration: none;
}
/**
 * Address differences between Firefox and other browsers.
 */
hr {
  box-sizing: content-box;
  height: 0;
}
/**
 * Contain overflow in all browsers.
 */
pre {
  overflow: auto;
}
/**
 * Address odd `em`-unit font size rendering in all browsers.
 */
code,
kbd,
pre,
samp {
  font-family: monospace, monospace;
  font-size: 1em;
}
/* Forms
   ========================================================================== */
/**
 * Known limitation: by default, Chrome and Safari on OS X allow very limited
 * styling of `select`, unless a `border` property is set.
 */
/**
 * 1. Correct color not being inherited.
 *    Known issue: affects color of disabled elements.
 * 2. Correct font properties not being inherited.
 * 3. Address margins set differently in Firefox 4+, Safari, and Chrome.
 */
button,
input,
optgroup,
select,
textarea {
  color: inherit;
  /* 1 */
  font: inherit;
  /* 2 */
  margin: 0;
  /* 3 */
}
/**
 * Address `overflow` set to `hidden` in IE 8/9/10/11.
 */
button {
  overflow: visible;
}
/**
 * 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 Firefox, IE 8/9/10/11, and Opera.
 * Correct `select` style inheritance in Firefox.
 */
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;
}
/**
 * Remove inner padding and border in Firefox 4+.
 */
button::-moz-focus-inner,
input::-moz-focus-inner {
  border: 0;
  padding: 0;
}
/**
 * Address Firefox 4+ setting `line-height` on `input` using `!important` in
 * the UA stylesheet.
 */
input {
  line-height: normal;
}
/**
 * It's recommended that you don't attempt to style these elements.
 * Firefox's implementation doesn't respect box-sizing, padding, or width.
 *
 * 1. Address box sizing set to `content-box` in IE 8/9/10.
 * 2. Remove excess padding in IE 8/9/10.
 */
input[type="checkbox"],
input[type="radio"] {
  box-sizing: border-box;
  /* 1 */
  padding: 0;
  /* 2 */
}
/**
 * Fix the cursor style for Chrome's increment/decrement buttons. For certain
 * `font-size` values of the `input`, it causes the cursor style of the
 * decrement button to change from `default` to `text`.
 */
input[type="number"]::-webkit-inner-spin-button,
input[type="number"]::-webkit-outer-spin-button {
  height: auto;
}
/**
 * 1. Address `appearance` set to `searchfield` in Safari and Chrome.
 * 2. Address `box-sizing` set to `border-box` in Safari and Chrome.
 */
input[type="search"] {
  -webkit-appearance: textfield;
  /* 1 */
  box-sizing: content-box;
  /* 2 */
}
/**
 * Remove inner padding and search cancel button in Safari and Chrome on OS X.
 * Safari (but not Chrome) clips the cancel button when the search input has
 * padding (and `textfield` appearance).
 */
input[type="search"]::-webkit-search-cancel-button,
input[type="search"]::-webkit-search-decoration {
  -webkit-appearance: none;
}
/**
 * Define consistent border, margin, and padding.
 */
fieldset {
  border: 1px solid #c0c0c0;
  margin: 0 2px;
  padding: 0.35em 0.625em 0.75em;
}
/**
 * 1. Correct `color` not being inherited in IE 8/9/10/11.
 * 2. Remove padding so people aren't caught out if they zero out fieldsets.
 */
legend {
  border: 0;
  /* 1 */
  padding: 0;
  /* 2 */
}
/**
 * Remove default vertical scrollbar in IE 8/9/10/11.
 */
textarea {
  overflow: auto;
}
/**
 * Don't inherit the `font-weight` (applied by a rule above).
 * NOTE: the default cannot safely be changed in Chrome and Safari on OS X.
 */
optgroup {
  font-weight: bold;
}
/* Tables
   ========================================================================== */
/**
 * Remove most spacing between table cells.
 */
table {
  border-collapse: collapse;
  border-spacing: 0;
}
td,
th {
  padding: 0;
}
/***基础函数****/
.number {
  font-family: Helvetica, "黑体";
}
.clearfix {
  *zoom: 1;
}
.clearfix:before,
.clearfix:after {
  content: "";
  display: table;
}
.clearfix:after {
  clear: both;
}
.tac {
  text-align: center;
}
/***pxtorem*****/
/***rem转换方法****/
html,
body {
  width: 100%;
  height: 100%;
  background: #f5f5f5;
  color: #3a3a3a;
  -webkit-user-select: none;
  user-select: none;
  overflow: hidden;
}
/*函数列表*/
/*函数列表 end*/
.grain {
  width: 10rem;
  height: 100%;
  margin: 0 auto;
  position: relative;
  /* canvas 画布 */
}
.grain canvas {
  display: inline-block;
}
.grain .change-themes {
  width: 1.06666667rem;
  height: 1.06666667rem;
  background-image: url('../img/exchange.png');
  background-repeat: no-repeat;
  background-size: 100% 100%;
  position: absolute;
  top: 0.26666667rem;
  right: 0.26666667rem;
  z-index: 9999;
}
.grain audio {
  display: none;
  height: 0;
}