Common CSS Properties

body{
  /* text */
  font-family: "Helvetica Neue", Helvetica, Arial, sans-serif;
  font-size: 18px;
  font-style: none;
  font-weight: normal;
  
  /* canvas */
  background-color: #aaa;
  background-image: none;
  
  /* spacing */
  margin:0;
  padding:10% 20% 300px 40%;
}

h1, h2, h3, p{
  color: #ff00ff;
  text-align: center;
  text-decoration: underline;
  text-transformation: uppercase;
  font-size: 2em;
  line-height: 4em;
  letter-spacing: 2px;
  font-weight: bold;
}

p{
  font-size: 1em;
  line-height: 1.25em;
  font-style: italic;
}

ul{
  list-style-type: square;
}

div{
  display: block;
  float: left;
  margin-left: 20px;
  margin-bottom: 20px;
  background-color: red;
  width: 300px;
  height: 150px;
}