/* The popup bubble styling. */
.popup-bubble {
   /* Position the bubble centred-above its parent. */
   color: rgba(0, 0, 0, 0.8);
   position: absolute;
   top: 0;
   left: 0;
   transform: translate(-50%, -100%);
   font-size: 12px;
   /* Style the bubble. */
   background-color: white;
   padding: 12px 10px;
   border-radius: 4px;
   font-family: sans-serif;
   overflow-y: auto;
   max-height: 60px;
   box-shadow: 0px 2px 10px 1px rgba(0,0,0,0.5);
 }
 /* The parent of the bubble. A zero-height div at the top of the tip. */
 .popup-bubble-anchor {
   /* Position the div a fixed distance above the tip. */
   position: absolute;
   width: 100%;
   bottom: /* TIP_HEIGHT= */ 8px;
   left: 0;
 }
 /* This element draws the tip. */
 .popup-bubble-anchor::after {
   content: "";
   position: absolute;
   top: 0;
   left: 0;
   /* Center the tip horizontally. */
   transform: translate(-50%, 0);
   /* The tip is a https://css-tricks.com/snippets/css/css-triangle/ */
   width: 0;
   height: 0;
   /* The tip is 8px high, and 12px wide. */
   border-left: 6px solid transparent;
   border-right: 6px solid transparent;
   border-top: /* TIP_HEIGHT= */ 8px solid white;
 }
 /* JavaScript will position this div at the bottom of the popup tip. */
 .popup-container {
   cursor: auto;
   height: 0;
   position: absolute;
   /* The max width of the info window. */
   width: 200px;
 }