body {
  background-image: url('images/lain-mess.png');
  min-height: 100vh;
  margin: 0px;
  padding: 0px;
  background-size: cover;
  background-repeat: no-repeat;
  font-family: "Comic Sans MS", cursive;
}
html {margin: 0px;
padding: 0px;}
.main-content {
  font-size: 40px;
  color: purple;
}

p1 {
  color: red;
}
.sidenav {
  background-color: brown;
  color: #00FF2B;
  width: 100px;
  height: 400px;
  position: fixed;
  z-index: 1;
  top: 20px;
  bottom: 20px;
  left: 10px;
  overflow-x: hidden;
  padding: 8px 8px 8px 8px;
}