body {
  font-family: "黑体";
}
.banner {
  background-color: #161f1e;
  margin-bottom: 50px;
}
.banner .nav {
  width: 1000px;
  height: 80px;
  margin: 0 auto;
}
.banner .nav img {
  height: 40px;
  margin-top: 20px;
}
.wrapper {
  width: 1000px;
  margin: 0 auto;
}
.box-1 {
  margin: 0 auto;
  width: 1000px;
  text-align: center;
  margin-bottom: 50px;
}
.box-1 h1 {
  font-size: 45px;
  line-height: 86px;
}
.box-1 h2 {
  font-size: 16px;
  line-height: 32px;
}
.box-2 {
  margin-right: -50px;
}
.box-2 img {
  float: left;
  display: block;
  width: 300px;
  margin-right: 50px;
}
.box-3 {
  margin: 100px auto;
  width: 1000px;
  text-align: center;
}
.box-3 h1 {
  font-size: 45px;
  line-height: 86px;
}
.box-3 h2 {
  font-size: 14px;
  line-height: 86px;
  color: #666666;
}
.box-3 .download {
  margin: 50px auto;
}
.box-3 .download img {
  display: block;
  margin: 0 auto;
}
.footer {
  background-color: #f1f1f1;
}
.footer .info {
  margin: 0 auto;
  width: 1000px;
  height: 60px;
  text-align: center;
  line-height: 60px;
}
.footer .info p {
  color: #666666;
  font: 16px;
}
.footer .info a {
  text-decoration: none;
  color: #666666;
  font: 16px;
}
.footer .info a:hover {
  text-decoration: underline;
}
.clear {
  clear: both;
  overflow: hidden;
  zoom: 1;
}
body,
div,
ul,
ol,
li,
h1,
h2,
h3,
h4,
h5,
h6,
form,
input,
p,
th,
td {
  padding: 0;
  margin: 0;
}
fieldset,
img {
  border: 0;
}
ul,
li {
  list-style: none;
}
h1,
h2,
h3,
h4,
h5,
h6 {
  font-weight: normal;
  font-size: 100%;
}