.modal {
  display: none;
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  opacity: 0.7;
}

.modal-content {
  position: absolute;
  top: 50%;
  left: 50%;
  height: 800px;
  width: 1000px;
  transform: translate(-50%, -50%);
  padding: 10px;
  text-align: center;
}

.modal-close {
  position: absolute;
  top: 1px;
  right: 10px;
  font-size: 20px;
  cursor: pointer;
}

#modal-range {
  opacity: 0.5;
}

input[type="range"]::-webkit-slider-runnable-track {
  background: rgb(255, 255, 255);
  border: solid rgb(74, 74, 74) 1px;
  height: 1rem;
}

/******** Firefox ********/
input[type="range"]::-moz-range-track {
  background: rgb(255, 255, 255);
  height: 0.5rem;
}