body {
 background: #f5f5f5; font-family: 'Roboto', sans-serif;}

.mini {
  font-size: 1em;
  color: #000;
  line-height: 9em;
  text-indent: 2.5em;
  position: absolute;
  left: 50%;
  top: 50%; 
}
.mega, .bola{
  line-height: 1.65em;
  font-weight: bold;
  font-size: 11em;
  color: black;
  font-family: 'Roboto', sans-serif;
  width: 300px;
  height: 300px;
  position: absolute;
  left: 50%;
  top: 50%; 
  margin-left: -150px;
  margin-top: -150px;}
 
.boom {color: #f5f5f5; }