body { background-color: #d5edb3; 
  text-align: center;
}

div#introContainer {
  width: 760px;
  height: 520px;
  border: 1px solid #fff;
  padding: 4px;
  margin: auto;
  text-align: left;
}

img {
  border: 1px solid #fff;
  padding: 0;
  margin: 0;
  float: left;
}

span.entra {
  float: right;
  font-size: 20px;
  width:100px;
}

span.entra a {
  text-decoration: none;
  color: #84b058;
  font-weight: bold;
  font-style: italic;
}
span.entra a:hover {
  text-decoration: underline;
  background-color: #84b058;
  color: #d5edb3;
}