.slider {
    -webkit-appearance: none;
    width: 100%;
    height: 15px;
    border-radius: 5px;   
    background: #d3d3d3;
    outline: none;
    opacity: 0.7;
    -webkit-transition: .2s;
    transition: opacity .2s;
  }
  
  .slider::-webkit-slider-thumb {
    -webkit-appearance: none;
    appearance: none;
    width: 25px;
    height: 25px;
    border-radius: 50%; 
    background: #04AA6D;
    cursor: pointer;
  }
  
  .slider::-moz-range-thumb {
    width: 25px;
    height: 25px;
    border-radius: 50%;
    background: #04AA6D;
    cursor: pointer;
  }

  .popup {
    position: absolute;
    top:20%;
    left: 10%;
    width: 80%;
    height:60%;
    background-color: gray;
    visibility: hidden;
  }