body {
  margin: 0;
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', 'Roboto', 'Oxygen',
    'Ubuntu', 'Cantarell', 'Fira Sans', 'Droid Sans', 'Helvetica Neue',
    sans-serif;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

code {
  font-family: source-code-pro, Menlo, Monaco, Consolas, 'Courier New',
    monospace;
}
header{
  height: 64px;
  width:100%;
  background-color: black;
}
.head_li{
  display: block;
  float: left ;
  color:white;
  font-size:16px;
  text-align: center;
  line-height: 64px;
  margin-left: 30px;
}
.head_li a{
  text-decoration: none;
  color:white;
}
.head_li a:hover{
  color: darkgray;
}
.head_lis{
  display: block;
  float: left ;
  color: aliceblue;
  font-size:16px;
  text-align: center;
  line-height: 64px;
  margin-left: 30px;
}
*{
  padding: 0;
  margin: 0;
}
.icon-touxiang{
  font-size:32px;
}
.head_fr{
  float: right;
  margin-right: 30px;
}
.box1{
  margin: 50px auto;
  background-color: antiquewhite;
  width: 1200px;
  height: 345px;
}
.boxTwo:hover{
  background-color: white;
  color:black;
}
.boxOne{
  width:160px;
  height: 345px;
  background-color:black;
  float: left;
  opacity: 0.8;
}
li{
  list-style: none;
}
.boxTwo{
  display: block;
  background-color:transparent;
  width:160px;
  height:40px;
  font-size:16px;
  color:white;
  text-align:left;
  text-decoration: none;
}