body {
  line-height: 1;
  color: black;
  background: white;
  font-family: sans-serif;
  margin: 0;}

#page_wrapper {
  margin: 0 auto; 
  width: 320px; }
  
#header {
  margin: 8px; }

#content_wrapper {
  clear: both;
  margin: 0 8px;
  text-align: justify;  }
  
h4 {
color: #000000;
background-color: #aeeaae;
padding-top: 0px;
padding-left: 0px;
font-weight: normal;
} 

#green_wrapper {
  padding: 5px;
  background: #aeeaae;
  border-radius: 5px;
  margin-top: 5px;
  text-align: center;
  border: 1px solid green; }

#footer {
  padding-top: 1em; 
  margin: 0 8px; }
  #footer #copyright {
    padding: 1em 0;
    font-size: 60%; }