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

html, body {
  margin: 0;
  border: 0;
  padding: 0;
  background-color: #fff;
}

main {
  margin: auto;
  width: 50%;
  padding: 20px;
}

main > h1 {
   text-align:center;
   font-size: 3.5em;
   
}

main > h2 { 
  text-align:center;
}

ul { 
  text-align:center;
}

centre {  
  text-align:center;
}


.centerImage
{
 text-align:center;
 display:block;
}

.h4{
  
}