html,
body,
div,
span,
object,
button,
iframe,
h1,
h2,
h3,
h4,
h5,
h6,
p,
blockquote,
a,
code,
em,
img,
q,
small,
strong,
dd,
dl,
dt,
li,
ol,
ul,
fieldset,
form,
label,
table,
tbody,
tr,
th,
td,
input {
  margin: 0;
  padding: 0;
  border: 0;
}

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

.img img{
  line-height: 0;
  width: 100%;
}

html {
  background: #fff;
  font-family: 'STHeiti', 'Microsoft YaHei', 'Helvetica', 'Arial', sans-serif;
  -webkit-text-size-adjust: none;
  word-break: break-word;
  font-size: 16px;
}

body {
  position: relative;
  width: 100%;
  min-height: 100vh;
  overflow-x: hidden;
}

.wrapper {
  max-width: 1200px;
  min-width: 800px;
  width: 90%;
  margin: 0 auto;
  position: relative;
}

#header { background-color: #deeffe; }

#header .img{
  padding: 10px 0;
  box-sizing: content-box;
  line-height: 0;
  width: 400px;
  margin-left: 10px;
}
#banner {
  background-color: #74acfc;
}
#banner img{
  width: 100%;
}
#main {
  background-color: #fff;
}
#anli {
  background-color: #eaebeb;
}

h3, h4{ font-weight: normal; line-height: 1.5; }
.line-height-2 { line-height: 2; }
.line-height-3 { line-height: 3; }
.align-center { text-align: center; }
.align-left { text-align: left; }
.align-right { text-align: right; }
.font-size-h3 { font-size: 24px; }
.font-size-h4 { font-size: 18px; }
.main-color{ color: #000; }
.minor-color{ color: #2e2e2e; }

.img.center {
  margin: 0 auto;
}

#main .wrapper > * { margin-top: 40px; }

.rows{ white-space: nowrap; }
.rows .section { display: inline-block; vertical-align: top; }

.cols{ white-space: pre-wrap; }
.cols .section { white-space: nowrap; }
.cols .section > * { display: inline-block; vertical-align: top; }

#main .wrapper #icon .section{
  margin: 0 20px;
  box-shadow: 1px 1px 1px #ccc, -1px 1px 1px #ccc, -1px -1px 1px #ccc, 1px -1px 1px #ccc;
  padding: 10px 10px 20px;
  border-radius: 4px;
  width: calc( 25% - 40px );
  box-sizing: border-box;
}

#main .wrapper #icon .section .bottom{ overflow: hidden; }

#main .wrapper #icon .section .img{ width: 100%; padding: 10px 20px; box-sizing: border-box; }

#main .wrapper #intro .section{ height: 440px; }
#main .wrapper #intro .section h3{ margin-left: 40px; }
#main .wrapper #intro .section h4{ margin-left: 40px; margin-top: 10px; }

#main .wrapper #intro .section .left{
  width: 60%;
  box-sizing: border-box;
  margin-top: 140px;
}

#main .wrapper #intro .section .right{ width: 40%; }

#main .wrapper #anli h2{ padding: 10px 0; line-height: 3; }
#main .wrapper #anli .section{
  vertical-align: top;
  display: inline-block;
  width: 25%;
  text-align: center;
  padding: 20px;
  box-sizing: border-box;
}

#main .wrapper #anli .section .img{ width: 200px; }


@media screen and (max-width: 640px) {
  .font-size-h3{ font-size: 16px; }
  .font-size-h4{ font-size: 12px; }
  .wrapper{ 
    max-width: 400px;
    min-width: 300px;
  }
  #main .wrapper #icon .section{
    width: calc( 50% - 10px );
    margin: 0 5px 12px;
    padding: 0;
    line-height: 0;
  }
  #header .img{ width: 300px; }
  #main .wrapper #icon .section .img{ padding: 0; }
  .rows{ white-space: pre-wrap; }
  #main .wrapper > *{ margin-top: 20px; }
  #main .wrapper #intro .section{ height: auto; }
  .cols .section > *{ display: block; width: 100%!important; }
  #main .wrapper #intro .section .left{margin-top: 20px; }
  #main .wrapper #anli .section{
     width: 100%; padding: 0; line-height: 0;
  }
  #main .wrapper #anli .section .bottom{ line-height: 1; }
  #main .wrapper #anli .section{ display: block; }
}