/*通用类*/
* {
  margin: 0;
  padding: 0;
}
h1 {
  text-align: center;
  color: #000000;
  font-size: 36px;
  font-family: "宋体", Arial;
  text-shadow: #FC0 1px 0 10px;
  padding: 10px;
}
p{
  text-indent:2em;
  line-height: 26px;
  margin: 20px;
}
body {
  background: rgba(147, 229, 243, 0.29);
  margin: 0 auto;
  font-size: 14px;
  color: #333;
  position: relative;
  padding-top: 50px;
  padding-bottom: 50px;
}
img {
  border: none;
}
a {
  cursor: pointer;
  color: #333;
  text-decoration: none;
  outline: none;
}
ul {
  list-style-type: none;
}
em {
  font-style: normal;
}
.lt {
  float: left;
}
.rt {
  float: right;
}
div.clear {
  font: 0px Arial;
  line-height: 0;
  height: 0;
  overflow: hidden;
  clear: both;
}
.clearfix::after {
  content: "";
  display: block;
  clear: both;
}
/*wrapin 主体容器宽度*/
.wrapin {
  width: 1000px;
  margin-left: auto;
  margin-right: auto;
}
.imgtop{
  width:1000px;
  height: auto;
  align-items: center;
  position: relative;
}
header {
  height: 50px;
  background: #ebffe9;
  border-bottom: 1px solid #ccc;
}
.nav li {
  line-height: 50px;
  float: left;
  width: 16.66%;
  text-align: center;
  font-size: 16px;
}
.nav li a {
  color: #333;
}
.con {
  padding: 15px;
  background: #fff;
}
.top .text {
  float: left;
  width: 60%;
  line-height: 26px;
}
.top .pic {
  float: right;
  width: 38%;
  margin-top: 20px;
}
.top .pic img {
  width: 100%;
}
h2 {
  font-size: 20px;
  color: #333;
  margin: 30px;
}
h3 {
  font-size: 15px;
  color: #333;
  margin: 30px;
}
.tupian ul {
  margin: 0 -15px;
}
.tupian ul li {
  width: 33.33%;
  float: left;
  padding: 15px;
  box-sizing: border-box;
}
.tupian ul li img {
  width: 100%;
  height: 200px;
  object-fit: cover;
}

footer {
  background: #282828;
  text-align: center;
  color: #fff;
  line-height: 50px;
}