.flash {
      animation: flashAnim 3s infinite;
    }

    @keyframes flashAnim {
      0%, 50%, 100% {
        color: blue;
        font-weight: 600;
        *background: #333;
        transform: scale(1);
      }
      25%, 75% {
        color: red;
        font-weight: 600;
        *background: red;
        transform: scale(1.08);
      }
    }