html {
  background-color: lightcyan;
}

h1, h2, p {
  text-align: center;
}

h1 {
  font-size: 2em;
}

h2 {
  font-size: 1.5em;
}

a {
  font-size: 1.25em;
  background-color: white;
  font-weight: bold;
  padding: 0.25em;
  text-decoration: none;
}

a:link {
  color: black;
}

a:visited {
  color: red;
}

a:hover {
  color: blue;
}

a:active {
  color:green; 
}

table {
  margin: auto;
  caption-side: bottom;
  border-spacing: 0;
}

td {
  width: 256px;
  height: 256px;
  text-align: center;
  vertical-align: middle;
  transition-duration: 2s;
  transition-timing-function: ease-out;
}

#bio {
  background-color: #ff7f00;
}

#rad {
  background-color: #ffff00;
}

#yin {
  background-color: white;
}

#joke {
  background-color: lightgray;
  color:lightgray;
  width: 8em;
  padding: 0.5em;
  margin: auto;
  transition-delay: 0.5s;
  transition-duration: 3s;
  transition-timing-function: linear;
}

#bio:hover {
  background-color: transparent;
}

#rad:hover {
  background-color: transparent;
}

#yin:hover {
  background-color: transparent;
}

#joke:hover {
  color: black;
}

td:target > img {
  display: none;
}