styles.css

body {
  margin: 0;
}

.sidenav {
  height: 100%;
  width: 180px;
  position: fixed;
  z-index: 1;
  top: 0;
  left: 0;
  background-color: black;
  color: white;
  overflow-x: hidden;
  padding: 20px 20px 20px 20px;
  font-family: 'Smooch Sans', sans-serif;
  font-size: 20px;
}


#svg_container {
  margin-left: 220px; /* Same as the width + padding of the sidenav */
}

svg  { background-color:antiquewhite }

.slider {
  -webkit-appearance: none;
  width: 100%;
  height: 10px;
  border-radius: 1px;  
  background: white;  
  outline: none;
  opacity: 1;
  -webkit-transition: .2s;
  transition: opacity .2s;
}

.slider::-webkit-slider-thumb {
  -webkit-appearance: none;
  appearance: none;
  width: 20px;
  height: 20px;
  border-radius: 50%; 
  background:white;
  cursor: pointer;
}

.slider::-moz-range-thumb {
  width: 25px;
  height: 25px;
  border-radius: 50%;
  background: antiquewhite;
  cursor: pointer;
}

.invisible {
  visibility: hidden;
}