body{
  margin: 0px;
}


main{
  margin-left: 20px;
  margin-right: 20px;
}

h1{
  text-align:center;
}

h2{
  text-align: center;
}

.navbar ul{
  list-style-type: none;
  /* background-color: grey; */
  background-color: hsl(0, 0%, 75%);
  /* background-color: hwb(0 25% 75%); */
  padding: 0px;
  margin: 0px;
  overflow: hidden;
}

.navbar li{
  float: left;
}

.navbar a{
  color: black;
  text-decoration: none;
  padding: 15px;
  display: block;
  text-align: center;
}

.navbar a:hover{
  background-color: hsl(0, 0%, 50%);
}