#invisFrame {
    position: absolute;
    z-index: -999;
    width: 0px;
    height: 0px;
}
.letters {
    position: relative;
    display: block;
    float: left;
    width: 12em;
    height: 6em;
    margin-top: 0.5em;
    margin-left: 2em;
    background: rgba(19, 21, 21, .6);
    color: rgba(0, 232, 255, .69); /*#00E8FF*/
}
.letters:hover {
    background-color: #f78c00;
}
.letterImg {
    width: 6em;
    height: 6em;
}

ul {
  position: fixed;
  z-index: 999;
  top: .5em;
  left: 30%;
  color: #fff;
  text-align: left;
  display: inline;
  margin: 0;
  padding: 10px 5px 10px 0;
  list-style: none;
  -webkit-box-shadow: 0 0 5px rgba(0, 0, 0, 0.15);
  box-shadow: 0 0 5px rgba(0, 0, 0, 0.15);
}
ul li {
  color: #fff;
  font: bold 12px/18px sans-serif;
  display: inline-block;
  margin-right: -4px;
  position: relative;
  padding: 10px 15px;
  background: #f78c00;
  cursor: pointer;
  -webkit-transition: all 0.2s;
  -moz-transition: all 0.2s;
  -ms-transition: all 0.2s;
  -o-transition: all 0.2s;
  transition: all 0.2s;
}
ul li:hover {
  background: #555;
  color: #f78c00;
}
ul li ul {
  padding: 0;
  position: absolute;
  top: 38px;
  left: 0;
  width: 150px;
  -webkit-box-shadow: none;
  display: none;
  opacity: 0;
  visibility: hidden;
  -webkit-transiton: opacity 0.2s;
  -moz-transition: opacity 0.2s;
  -ms-transition: opacity 0.2s;
  -o-transition: opacity 0.2s;
  -transition: opacity 0.2s;
}
ul li ul li {
  background: #555;
  display: block;
  color: #fff;
  text-shadow: 0 -1px 0 #000;
}
ul li ul li:hover { background-color: #666; }
ul li:hover ul {
  display: block;
  opacity: 1;
  visibility: visible;
}