html {
  font-family: Arial, Helvetica, sans-serif;
  background-color: rgb(234, 234, 234);
  margin: 0;
  padding: 0;
}

body {
  margin: 0;
  padding: 0;
}
#main {
  height: 100vh;
  width: 800px;
  margin: 0 auto;
}