.glow.in {
  text-shadow: 
    0.025em 0.025em 0.025em rgba(0, 0, 0, 0.8),
    0 0 0.5em rgba(255, 255, 255, 0.3);
}

.fade {
  opacity: 0;
    -webkit-transition: opacity 1s linear;
       -moz-transition: opacity 1s linear;
         -o-transition: opacity 1s linear;
            transition: opacity 1s linear;
}

.fade.in {
  opacity: 1;
}

/* BUTTONS
***************/


.playground {
  background: #fffff;
  border-radius: 4px;
 
  
}

.playground .controls {
  margin-bottom: 0;
  background: #ffffff;
  border-radius: 0 0 4px 4px;
 
}

.playground .controls form {
  margin-bottom: 0;
  padding-bottom: 8px;
}

.playground .controls select {
  width: 48%;
  margin-right: 4px;
}

@media (max-width: 480px) {
  .playground .controls select {
    width: 100%;
    margin-right: 0;
  }
}

.playground .viewport {
  display: table;
  min-height: 8em;
  padding: 20px 20px 20px 20px;
  
  border-radius: 4px 4px 0 0;
 
  overflow: hidden;
  
}

.playground .viewport .tlt {
  color: blue;
  font-size: 1.5em;
  font-weight: 200;
  letter-spacing: 1px;
  padding: 10px 100px;
  display: inline-block;
  vertical-align: middle;
  display: table-cell;
  text-align: center;
  /*visibility: hidden;*/
}