   #calendar .day.today {
        border-color: #33b5e5;
        outline: 20px solid rgba(51, 181, 229, 0.5);
        z-index: 100;
      }
      #calendar .day.past {
        opacity: 0.4;
      }
      #calendar .day .target {
        position: absolute;
        left: 0;
        top: 0;
        width: 100%;
        height: 100%;
        text-align: center;
        color: transparent;
        font-size: 70px;
        cursor: pointer;
        background-size: cover;
        background-position: 50% 50%;
   