ames div2 {
            0% {
                transform: scale(0.5);
            }
            50% {
                transform: scale(2);

            }
            100% {
                transform: scale(1);
            }
        }

        .div3 {
            transform: translateX(-100px);
            opacity: 0;
        }
        .cur .div3 {
            opacity: 1;
            transform: translateX(0);
            transition: all 1s;
        }

        .div4 {
            transform: translateY(-100px);
 