/**
 * Ming Ye, Zhou's Reset CSS v2.0 
 * Determine on 2019.6.22 23:00
 */

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: inherit;
  font-size: inherit;
  font-weight: normal;
  vertical-align: baseline;
}

/* HTML5 display-role reset for older browsers */
article, aside, details, figcaption, figure, 
footer, header, hgroup, menu, nav, section {
  display: block;
}

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

blockquote, q {
  quotes: none;
}

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

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

p {
  word-wrap: break-word; /* 允许长单词换行到下一行 */
  word-break: break-all; /* 允许在单词内换行 */
}

/* custom */

* {
  box-sizing: border-box;
  -webkit-backface-visibility: hidden; /* 旋转元素,背面不可见 */
}

html, body {
  width: 100%;
  font-size: 14px;
  line-height: 2.2rem;
  color: #555;
  font-family: "Arial", "Microsoft YaHei", "黑体", "宋体", "微软雅黑", sans-serif;
}

html {
  overflow-y: scroll;
}

body {
  -webkit-text-size-adjust: none; /* chrome可以设置比12px更小的字体 */
  -webkit-tap-highlight-color: rgba(0, 0, 0, 0); /* ios定义默认点击背景色 -> 仅限移动端 */
}

button, input, textarea, select {
  padding: 0;
  outline: none;
  word-wrap: break-word; /* 允许长单词换行到下一行 */
  word-break: break-all; /* 允许在单词内换行 */
  vertical-align: middle;
  font-size: 100%;
  font-family: "Arial", "Microsoft YaHei", "黑体", "宋体", "微软雅黑", sans-serif;
}

textarea {
  resize: none; /* 去除缩放按钮 */
}

img {
  border: 0;
  vertical-align: middle;
  transition: all .2s linear;
}

a {
  color: #555;
  text-decoration: none;
  transition: all .2s linear;
}

a:hover, a:active, a:focus {
  color: #ff0032;
  text-decoration: none;
}

/* scrollbar */
::-webkit-scrollbar {
  width: 5px;
  height: 5px;
}

::-webkit-scrollbar-track-piece {
  background-color: rgba(0, 0, 0, 0.2);
  -webkit-border-radius: 6px;
}

::-webkit-scrollbar-thumb:vertical {
  height: 5px;
  background-color: #a5a5a5;
  -webkit-border-radius: 6px;
}

::-webkit-scrollbar-thumb:vertical:hover {
  background-color: #ff0032;
}

::-webkit-scrollbar-thumb:horizontal {
  width: 5px;
  background-color: #a5a5a5;
  -webkit-border-radius: 6px;
}

/* clear */

.clearfix::before,
.clearfix::after {
  clear: both;
  content: "";
  display: block;
  margin: 0;
  padding: 0;
  font-size: 0;
  height: 0;
  line-height: 0;
  visibility: hidden;
}

.clearfix {
  *zoom: 1;
}

/* Flexible Box */

.box {
  display: box;
  display: -webkit-box;
  display: -moz-box;
  display: -ms-flexbox;
  display: -webkit-flex;
  display: flex;
}

/* flex换行 */

.flex-wrap {
  flex-wrap: wrap;
}

/* flex主轴对齐 */

.justify_center {
  justify-content: center;
}

.justify_around {
  justify-content: space-around;
}

.justify_between {
  justify-content: space-between;
}

/* flex侧轴对齐 */

.items_center {
  align-items: center;
}