body {
  background-color: #F7F4EA;
  color: #A8BBA3;
  font-family: Courier New;
  font-size: 20px;
}

.header {background-image: url("backgroundtry.jpg");
  height: 10%;
  color: #B87C4C;
  text-align: center;}
  
  .sidenav {background-image: url("backgroundtry.jpg");
  font-size: 70px;
  height: 100%;
  width: 20%;
  color: black;
  position: fixed;
  top:10%;
  left:0;
  }
  
  .main { 
  height: 100%;
  width: 100%;
  position: fixed;
  top:10%;
  left:25%;
  }
  .right{background-image: url("backgroundtry.jpg");
  font-size: 70px;
  height: 100%;
  width: 20%;
  color: black;
  position: fixed;
  top:10%;
  right:0;
  }