* {
  margin: 0;
  padding: 0;
}
body {
  height: 100%;
  background: url(images/1.jpg) no-repeat;
  background-size: cover;
  overflow: hidden;
}
.menu {
  position: absolute;
  top: 0;
  left: 0;
  width: 120px;
  height: 216px;
  background: #fff;
  padding: 5px;
  display: none;
}
.menu ul {
  list-style: none;
  overflow: hidden;
}
.menu ul li {
  height: 30px;
  line-height: 30px;
  text-align: center;
  border-bottom: 1px solid #ccc;
  vertical-align: middle;
  display: inline-block;
  width: 100%;
  padding-left: 10px;
  cursor: pointer;
}
.menu ul li:nth-child(1) {
  background: url(images/ico1.jpg) no-repeat 10px center;
}
.menu ul li:nth-child(2) {
  background: url(images/ico2.jpg) no-repeat 10px center;
}
.menu ul li:nth-child(3) {
  background: url(images/ico3.jpg) no-repeat 10px center;
}
.menu ul li:nth-child(4) {
  background: url(images/ico4.jpg) no-repeat 10px center;
}
.menu ul li:nth-child(5) {
  background: url(images/ico5.jpg) no-repeat 10px center;
}
.menu ul li:nth-child(6) {
  background: url(images/ico6.jpg) no-repeat 10px center;
}
.menu ul li:nth-child(7) {
  border-bottom: 0;
  background: url(images/ico7.jpg) no-repeat 10px center;
}
.wall {
  position: absolute;
  width: 650px;
  height: 340px;
  background: rgba(0, 0, 0, 0.4);
  top: 50%;
  left: 50%;
  margin-left: -325px;
  margin-top: -170px;
  display: none;
}
.wall h4 {
  line-height: 50px;
  height: 50px;
  width: 640px;
  color: #fff;
  padding: 5px;
  font-weight: bolder;
  font-size: 20px;
  background: #333;
}
.wall .close {
  cursor: pointer;
  float: right;
  width: 50px;
  height: 50px;
  line-height: 50px;
  text-align: center;
  background: url("images/close.png") no-repeat center center;
}
.wall ul {
  list-style: none;
  width: 640px;
  height: 270px;
  padding: 5px;
}
.wall ul li {
  float: left;
  width: 200px;
  height: 125px;
  margin-right: 10px;
  margin-bottom: 10px;
  cursor: pointer;
}
.wall ul li img {
  width: 200px;
  height: 125px;
}