control-container > div {
  display: flex;
  display: -webkit-flex;
  width: 300px;
  font-size: 0;
  flex-direction: column;
  -webkit-flex-direction: column;
  -ms-flex-direction: column;
  align-items: center;
  -webkit-align-items: center;
}

/* Overwrites */

control-container input,
control-container input:focus,
control-container input:active,
control-container button {
  border: none;
  outline: none;
  color: #37F3FF;
  background: none;
  -webkit-appearance: none;
}

control-container input[type=text] {
  width: 2em;
  text-align: center;
  border-bottom: 1px solid #186065;
}

/**/

frequency {
  height: 30px;
  line-height: 20px;
  font-size: 12px;
}

#frequency-input {
  width: 200px;
  height: 1px;
  vertical-align: middle;
  -webkit-appearance: none;
  background: #23868E;
  cursor: pointer;
  transition: all .3s ease;
}

#frequency-input::-webkit-slider-thumb {
  width: 2px;
  height: 15px;
  -webkit-appearance: none;
  background: #23868E;
  cursor: pointer;
  transition: all .3s ease;
}

#frequency-input::-moz-range-thumb {
  width: 2px;
  height: 15px;
  background: #23868E;
  border: none;
  cursor: pointer;
  transition: all .3s ease;
}

#frequency-input::-moz-range-track {
  background: #23868E;
}

#frequency-input:hover, #frequency-input:active {
  background: #21A0A7;
}

#frequency-input:hover::-webkit-slider-thumb {
  height: 20px;
  background: #37F3FF;
}

#frequency-input:active::-webkit-slider-thumb {
  height: 20px;
  background: #37F3FF;
}

#frequency-input:hover::-moz-range-thumb {
  height: 20px;
  background: #37F3FF;
}

#frequency-input:active::-moz-range-thumb {
  height: 20px;
  background: #37F3FF;
}

frequency-label {
  position: absolute;
  bottom: 4px;
  display: inline-block;
  padding-left: 28px;
  width: 50px;
  font-size: 10px;
  font-weight: 900;
  text-align: left;
  z-index: 1;
}

/* Buttons */

control-container button {
  min-width: 35px;
  padding: 6px 9px;
  text-align: center;
  font-size: 18px;
  font-weight: bolder;
  font-family: inherit;
  border: 1px solid rgba(0, 0, 0, 0);
  -webkit-font-smoothing: subpixel-antialiased;
  cursor: pointer;
  transition: all .2s ease;
}

control-container button:hover {
  color: #37F3FF;
  border-top: 1px solid #07939C;
  background-color: rgba(55, 243, 255, 0.08);
}

control-container {
  position: relative;
  display: block;
}