/**
 * 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: #c02125;
   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: #c02125;
 }
 
 ::-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;
 }