* {
  margin: 0;
  padding: 0;
  list-style: none;
  box-sizing: border-box;
}
body,
html {
  width: 100%;
  height: 100%;
  overflow: hidden;
  position: relative;
}
.header {
  height: 80px;
  background-color: rgba(0, 0, 0, 0.2);
  color: white;
  line-height: 80px;
  position: relative;
  font-size: 30px;
}
.header .logo {
  height: 100%;
}
.header .logo img {
  height: 80%;
}
.header .login_out {
  position: absolute;
  right: 0;
  top: 0;
  height: 80px;
  cursor: pointer;
  margin-right: 20px;
}
.header .login_out img {
  margin: 0 5px;
}
.header .title {
  margin-left: 50px;
  letter-spacing: 10px;
  font-weight: 800;
  text-shadow: 0 0 10px #64a4f8;
}
.user_name {
  font-size: 18px;
}
.admin {
  width: 100%;
  height: 100%;
  background: url("../img/bj.jpg") no-repeat center center;
}
.layui-side {
  top: 80px;
  width: 270px;
  overflow-x: hidden;
  background: #000000b3;
  filter: progid:DXImageTransform.Microsoft.gradient(startColorstr=#6b859c80, endColorstr=#6b839b80);
}
.layui-nav-tree .layui-nav-itemed > A {
  filter: progid:DXImageTransform.Microsoft.gradient(startColorstr=#6b859c80, endColorstr=#6b839b80);
}
.layui-body {
  top: 80px;
  left: 270px;
  background: white;
}
.my-iframe {
  display: block;
  height: 100%;
  width: 100%;
  min-height: 800px;
  position: relative;
}