.cont {
  width: 100%;
  min-height: 100%;
  position: relative;
  box-sizing: border-box;
  padding-bottom: 120px;
}
.cont .header {
  width: 100%;
  height: 162px;
  background: url(../images/top_back.png);
  background-size: 100% 100%;
}
.cont .header img {
  display: block;
  margin: auto;
  height: 100%;
}
.cont .nav {
  width: 100%;
  height: 45px;
  background: url(../images/nav_back.png);
  background-size: 100% 100%;
}
.cont .nav ul {
  width: 980px;
  margin: auto;
  height: 100%;
}
.cont .nav ul li {
  text-align: center;
  width: 12.5%;
  height: 100%;
  line-height: 45px;
  float: left;
}
.cont .nav ul li a {
  font-size: 16px;
  color: #fff;
  font-weight: bold;
  display: block;
  width: 100%;
  height: 100%;
  text-align: center;
}
.cont .nav ul li:hover {
  background: #517fbe;
}
.cont .bottom {
  position: absolute;
  background: #649ae3;
  width: 100%;
  height: 110px;
  left: 0;
  bottom: 0;
  box-sizing: border-box;
  padding-top: 15px;
}
.cont .bottom p {
  width: 980px;
  margin: 0 auto;
  text-align: center;
  font-size: 16px;
  color: #fff;
  margin-top: 5px;
}