0/* This is a comment */
 
      body {
        background-color: green;
        margin-left: 20%;
        margin-right: 20%;
        border: 1px dotted gray;
        padding: 10px 10px 10px 10px;
        font-family: sans-serif;
      }
     
  

 

h1,h2{color:#018080; text-align:center}
.blue {color:blue} /* yes. with a dot */