body {
     margin: 0;
     overflow: hidden;
     font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, Cantarell, 'Open Sans', 'Helvetica Neue', sans-serif;
     font-size: 15px;
     -webkit-touch-callout: none; /* iOS Safari */
     -webkit-user-select: none; /* Safari */
      -khtml-user-select: none; /* Konqueror HTML */
        -moz-user-select: none; /* Old versions of Firefox */
         -ms-user-select: none; /* Internet Explorer/Edge */
             user-select: none; /* Non-prefixed version, currently
                                  supported by Chrome, Edge, Opera and Firefox */

}

.a11y-big-text {
  font-size: 20px;
}