body {
  margin: 0;
  padding: 0;
  background-color: #0c0c0c;
}
#map {
  position: absolute;
  top: 0;
  bottom: 0;
  width: 100%;
}

#map {
  position: fixed;
  width: 50%;
}
#features {
  width: 50%;
  margin-left: 50%;
  font-family: sans-serif;
  overflow-y: scroll;
  background-color: #0c0c0c;
  color: floralwhite;
  padding-top: 50px;
}

section {
  padding: 25px 50px;
  line-height: 25px;
/*  border-bottom: 1px solid #ddd;*/
  opacity: 0.25;
  font-size: 15px;
}
section.active {
  opacity: 1;
}
section:last-child {
  border-bottom: none;
  margin-bottom: 350px;
}

/* Mobile */
@media only screen 
  and (min-width: 300px) 
  and (max-width: 700px) 
  /* and (-webkit-min-device-pixel-ratio: 3) */ {  

    #map {
      width: 100%;
      height: 30%;
      z-index: 1;
    }
    #features {
      width: 100%;
      /* height: 70%; */
      margin-left: 0%;
      position: absolute;
      top: 30%;
    }
    section:last-child {
      margin-bottom: 250px;
    }

}