* { font-family: sans-serif; font-size: 10pt; color: black; margin:0;padding:0;border:0;}
#one {
  background-color:#ddd;border-radius:8px;-moz-border-radius:8px;padding:1ex;  
  opacity: 0.8;
  margin:1ex;
  margin-top:10ex;         
}
#two {
  background-color:#ccc;border-radius:8px;-moz-border-radius:8px;padding:1ex;
  opacity: 0.7;
  margin:1ex;
}
p {
  margin:0;
}
a {
  color:black;        
  text-decoration:none;
}
a:hover {
  color:black;        
  text-decoration:underline;
}
#three {
  background-color:#bbb;border-radius:8px;-moz-border-radius:8px;padding:1ex;
  opacity: 0.7;
  margin:1ex;
}
#four {
  background-color:#aaa;border-radius:8px;-moz-border-radius:8px;padding:1ex;
  opacity: 0.7;
  margin:1ex;
}
body {
  background-image: url("background.jpg");
  background-size: cover;
  text-align:center;  
  margin-left:15%;
  margin-right:15%;
}