body,h1,h2,h3,h4,ul,p{margin: 0} body{font-family: 微软雅黑;}
.top-nav{width: 100%; height: 25px; background: #111111}
.banner{width: 100%; height: 920px; background-image: url(image/banner.jpg); margin-top: 40px;}
.menu{overflow: hidden; margin-left: 1350px;}
 .menu li{float: left;  width: 120px; text-align: center; font-size: 18px; margin-top: 45px; font-weight: bold;}
 .menu a{color: #000;}
a{text-decoration: none;}
li{list-style-type: none;}
.num{font-size: 50px; font-weight: bold; overflow: hidden; margin-left: 520px; margin-top: 40px;}
  .num li{float: left; margin-right: 100px;}
.word{font-size: 20px; overflow: hidden; margin-left: 500px;}
  .word li{float: left; margin-right: 70px;}
.product-1{overflow: hidden; padding-left: 60px; margin-top: 200px; position: absolute;}
  .product-1 li{float: left; padding-top: 200px; width: 459px; text-align: left; color: #ffffff;
   font-size: 50px; font-family: 华文彩云;}
.product-2{overflow: hidden; padding-left: 60px; margin-top: 200px; position: absolute;}
  .product-2 li{float: left; padding-top: 250px; width: 459px; text-align: left; color: #ffffff;
   font-size: 30px; font-weight: bold;}
.product-3{overflow: hidden; padding-left: 60px; margin-top: 200px; position: absolute;}
  .product-3 li{float: left; padding-top: 300px; width: 459px; text-align: left; color: #ffffff;
   font-size: 15px; margin-top:10px;}
   .product-3 p{margin-top: 10px;}
.banner-tg{width: 100%; background-image: url(image/百度推广-背景.jpg); position: absolute; height:
 600px;}
.bd-logo{width: 179px; height: 155px; position:absolute; margin-left: 300px; margin-top: 100px;}
.bdyx-title{color: #ffffff; font-size: 52px; font-weight: bold; margin-top: 250px; margin-left:
 300px;}
.bdyx-body{color: lightgray ; font-size: 18px; font-weight: lighter; margin-top: 30px; margin-left:
 300px;}
.contact{width: 100%; background-image: url(image/contact.png); position: absolute; height:
 707px;}
 .contact-title{color: #ffffff; font-size: 52px; font-weight: bold; margin-top: 180px; margin-left:
 250px;}
.contact-body-1{color: lightgray ; font-size: 25px; font-weight: normal; margin-top: 30px; margin-left:
 250px;}
 .contact-body-2{color: lightgray ; font-size: 30px; font-weight: normal; margin-top: 40px; margin-left:
 1100px;}
.bottom-nav{width: 100%; height: 35px; background: #111111; text-align: center;}