html,body{
  margin: 0;
  padding: 0;
}

body{
  font-family: Helvetica, Arial, sans-serif;
}

nav{
  background-color: rgb(50, 50, 50);
}

nav a{
  display: inline-block;
  color: white;
  text-decoration: none;
  transition: all .5s linear;
  margin: 0;
  border-right: 1px solid white;
  padding: 0 1em;
}

nav a:hover{
  color: black;
}

#page-content{
  margin: 2em 1em;
}

button{
  padding: .5em 1em;
  margin: 1em;
}