/* GENERAL */

[contenteditable=true]:empty:before{
  content: attr(placeholder);
  display: block; /* For Firefox */
}

/* ACTIVITY 1 */

.activity-btn {
  min-height: 150px;
  font-size: 28px;
  background-color: #333;
  border: solid 1px #333;
  color: #fff;
  text-align: center;
  padding: 10px 16px;
  border-radius: 6px;
  cursor: pointer;
}

#section-1 .btn-jump {
  margin-top: 20px;
}

.activity-btn:active, .activity-btn:hover, .activity-btn:focus {
  background-color: #fff;
  color: #333;
  border: solid 1px #333;
}

/* ACTIVITY 2 & 3 */

.bubble {
  padding: 10px 15px;
  min-height: 180px;
  background-color: #CFCFCF;
  border-radius: 10px;
  margin-bottom: 30px;
}

.bubble h4, .bubble h5 {
  text-align: center;
}

.text-entry-two, .text-entry-three {
  font-size: 18px;
}

.bubble .hint {
  margin-top: 10px;
  color: #2048a2;
}

@media (min-width: 768px) {
  #section-1 .btn-jump {
    margin-top: 0px;
  }
}

@media print {

  .bubble {
    background-color: #CFCFCF !important;
  }

}