<style>
body {
  font: 8px/0px monospace;
  border-style: none;
  background: white;
  color: black;
}
button {
  font: 36px/0px monospace;
  height:30px;
  border-style: none;
}
.a {
  background: violet;
}
.b {
  background: dodgerBlue;
  color: dodgerBlue;
}
.c {
  font: 144px/0px monospace;
  background: white;
  height:144px;
}
th {
  font: 36px/0px monospace;
  height:30px;
}
.a:hover
 {
  background: red;
  color: white;
  transition: transform 2s;
}
.b:hover
 {
  background: red;
  color: white;
  transition: transform 2s;
}
.c:hover
 {
  background: red;
  color: white;
  transition: transform 2s;
}
#aa {
  font: 144px/0px monospace;
  color: yellow;
  text-shadow: 0 0 72px #FF0000, 0 0 144px #0000FF;
}
#bb {
  font: 72px/0px monospace;
  color: yellow;
  text-shadow: 0 0 36px #FF0000, 0 0 72px #0000FF;
}
</style>