.slidecontainer {
    width: 100%; /* Width of the outside container */
  }
  
  /* Mouse-over effects */
  .slider:hover {
    opacity: 1; /* Fully shown on mouse-over */
  }

  .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: 45px;
    height: 45px;
    border-radius: 50%; 
    background: url("popcat.jpg");
    cursor: pointer;
  }
  
  .slider::-moz-range-thumb {
    width: 45px;
    height: 45px;
    border-radius: 50%;
    background: url("popcat.jpg");
    cursor: pointer;
  }