/* 
html5doctor.com Reset Stylesheet
v1.6.1
Last Updated: 2010-09-17
Author: Richard Clark - http://richclarkdesign.com 
Twitter: @rich_clark
*/

html,
body,
div,
span,
object,
iframe,
h1,
h2,
h3,
h4,
h5,
h6,
p,
blockquote,
pre,
abbr,
address,
cite,
code,
del,
dfn,
em,
img,
ins,
kbd,
q,
samp,
small,
strong,
sub,
sup,
var,
b,
i,
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%;
  vertical-align: baseline;
  background: transparent;
}

body {
  background: #eee;
  font-family: Helvetica Neue, Helvetica, Arial, sans-serif;
  font-size: 14px;
  color: #000;
}
html,body {
  position: relative;
  width: 100%;
  height: 100%;
  overflow: hidden;
}

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

ul,
li {
  list-style: none;
}

blockquote,
q {
  quotes: none;
}

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

a {
  margin: 0;
  padding: 0;
  font-size: 100%;
  vertical-align: baseline;
  background: transparent;
  display: block;
  -webkit-transition: all .3s;
  transition: all .3s;
  cursor: pointer;
  text-decoration: none;
}

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

/* change border colour to suit your needs */
hr {
  display: block;
  height: 1px;
  border: 0;
  border-top: 1px solid #cccccc;
  margin: 1em 0;
  padding: 0;
}

input,
select {
  vertical-align: middle;
}

img {
  width: 100%;
}

.mt10 {
  margin-top: 10px;
}

.mt15 {
  margin-top: 15px;
}
.mt20 {
  margin-top: 20px;
}
.mt30 {
  margin-top: 30px;
}
.w70{
  width: 70%;
  margin: 0 auto;
  height: 100%;
}
.w85{
  width: 85%;
  margin: 0 auto;
  height: 100%;
}


.fl {
  float: left;
}

.clearfix:after {
  content: ".";
  /**/
  /*内容为“.”就是一个英文的句号而已。也可以不写。*/
  display: block;
  /**/
  /*加入的这个元素转换为块级元素。*/
  clear: both;
  /**/
  /*清除左右两边浮动。*/
  visibility: hidden;
  /**/
  /*可见度设为隐藏。注意它和display:none;是有区别的。visibility:hidden;仍然占据空间，只是看不到而已；*/
  line-height: 0;
  /**/
  /*行高为0；*/
  height: 0;
  /**/
  /*高度为0；*/
  font-size: 0;
  /**/
  /*字体大小为0；*/
}

.clearfix {
  *zoom: 1;
}
.center{
  text-align: center;
}


#mask2 {
  width: 100%;
  height: 100%;
  position: fixed;
  top: 0;
  left: 0;
  z-index: 21;
  background: rgba(0, 0, 0, 0.5);
  display: none;
}


.isMobile{
  display: none;
}
.isPc{
  display: block;
}
@media (max-width: 580px) {
  .isMobile{
    display: block;
  }
  .isPc{
    display: none;
  }
  .isMobile.header{
    display: flex;
  }
  .header{
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 65px;
    display: flex;
    align-items: center;
    background: rgba(0,0,0,0.2);
    color: #fff;
    z-index: 2;
  }
  .header .icon{
    width: 50px;
    margin-left: 10px;
  }
  .header .text{
    text-align: left;
    margin-left: 10px;
  }
  .header .text h2{
    font-size: 16px;
  }
  .header .down-btn{
    width: 120px;
    margin-left: auto;
    margin-right: 10px;
  }
  .header .down-btn img{
    height: 100%;
  }
  .ages{
    position: absolute;
    left: 10px;
    top: 75px;
    width: 50px;
    z-index: 2;
  }
}