This is a set of resets that I created in order to be used with codepen.

reset.css

* {
  -webkit-box-sizing: border-box;
  -moz-box-sizing: border-box;
  box-sizing: border-box;
}
 
html,
body {
  font-family: sans-serif;
  margin: 0;
  padding: 0;
}
 
h1, h2,
h3, h4,
h5, h6 {
  margin: 0;
  line-height: 2;
}
 
nav ul {
  margin: 0;
  padding: 0;
}