 border: 2px solid #138830;
          height: 20px;
          position: relative;
          margin-bottom: 10px;
      }

      .speedGauge_bar {
          position: absolute;
          top: 0;
          left: 0;
          bottom: 0;
          width: 20%;
          background-color: #138830;
          transition: width 0.3s linear;
      }

    </style>
    <link rel="stylesheet" href="https://unpkg.com/purecss@1.0.0/build/pure-min.css" integrity="sha384-nn4HPE8lTHyVtfCBi5yW9d20FjT8BJwUXyWZT9InLYax14RDjBj46