*, ::before, ::after{
  padding: 0;
  margin: 0;
  border: 0;
  box-sizing: border-box;
}

* {
  border: dotted 1px white;
}

:root{
  font-size: 62.5%;
  width: 100%;
}

body {
  background-color: black;
  color: white;
  font-family:monospace;
}

header, main, footer, p {
  padding: 1vmax;
  margin: 1vmin;
  }

a{
  text-decoration: none;
  color: lightgrey;
  }
  
a:hover{
  color: red;
  }
  
header, footer{
  background-color: darkslategrey;
  }
  
h1{font-size:4.5rem;} 
h2{font-size:4rem;} 
h3{font-size:3.5rem;} 
h4{font-size:3rem;} 
h5{font-size: 2.5rem;} 
h6{font-size: 2rem;} 
p{font-size: 1.5rem;}