.chat-box {
  font: normal normal 11px/1.4 Tahoma, Verdana, Sans-Serif;
  color: #333;
  width: 350px;
  /* Chatbox width */
  border: 2px solid #55B9DD;
  border-bottom: none;
  background-color: white;
  position: fixed;
  right: 10px;
  bottom: 0px;
  z-index: 9999;
  -webkit-box-shadow: 1px 1px 5px rgba(0, 0, 0, .2);
  -moz-box-shadow: 1px 1px 5px rgba(0, 0, 0, .2);
  box-shadow: 1px 1px 5px rgba(0, 0, 0, .2);
}

.chat-box > input[type="checkbox"] {
  display: block;
  margin: 0 0;
  padding: 0 0;
  position: absolute;
  top: 0;
  right: 0;
  left: 0;
  width: 100%;
  height: 26px;
  z-index: 4;
  cursor: pointer;
  opacity: 0;
  filter: alpha(opacity=0);
}

.chat-box > label {
  display: block;
  height: 24px;
  line-height: 24px;
  background-color: #9DC4D7;
  color: white;
  font-weight: bold;
  padding: 0 1em 1px;
}

.chat-box > label:before {
  content: attr(data-collapsed)
}

.chat-box .chat-box-content {
  padding: 2px;
  display: none;
}


/* hover state */

.chat-box > input[type="checkbox"]:hover + label {
  background-color: #55B9DD;
}


/* checked state */

.chat-box > input[type="checkbox"]:checked + label {
  background-color: #9DC4D7;
}

.chat-box > input[type="checkbox"]:checked + label:before {
  content: attr(data-expanded)
}

.chat-box > input[type="checkbox"]:checked ~ .chat-box-content {
  display: block;
  height: 350px;
}