a:link {
  color:yellow;
}
a:active {
  color:#CCFF99;
}
a:visited {
  color:#CCFF99;
}
body {
  background-color: #333333;
  color: lightgrey;
}

img { 
width: 5%;
}

@media only screen and (max-width: 768px) {
  /* For mobile phones: */
  img {
    width: 100%;
  }
}