#click-area {
  cursor: crosshair;
  margin: 20px;
  border: 1px solid black;
  background: #dee;
  width: 300px;
  min-width: 300px;
  min-height: 200px;
  overflow: auto;
  resize: both;
}

.slider-label {
  margin: 20px;
  margin-bottom: 5px;
}

.slider-container {
  margin: 20px;
  margin-top: 0;
  border: 1px solid black;
  width: 300px;
  height: 25px;
}

.slider {
  -webkit-appearance: none;
  -webkit-transition: 0.2s;
  appearance: none;
  opacity: 0.7;
  transition: opacity 0.2s;
  outline: none;
  background: #d3d3d3;
  width: 300px;
  height: 25px;
}

.slider:hover {
  opacity: 1;
}

.slider::-webkit-slider-thumb {
  -webkit-appearance: none;
  appearance: none;
  cursor: pointer;
  background: #04aa6d;
  width: 25px;
  height: 25px;
}

.slider::-moz-range-thumb {
  cursor: pointer;
  border: none;
  border-radius: 0;
  background: #04aa6d;
  width: 25px;
  height: 25px;
}

input[type="file"] {
  display: none;
}

.custom-file-upload {
  display: inline-block;
  cursor: pointer;
  margin: 20px;
  margin-top: 0;
  border: 1px solid #ccc;
  padding: 6px 12px;
}