  scrollTrigger: {
              trigger: ".main",
              start: "30% top",
              end: "80% top",
              scrub: true,
              markers: true,
              pin: true, // 动画执行期间，页面不进行滚动，动画执行结束后
            },
          });
          const t2 = gsap.timeline();
          gsap.set(".dd-text", { scale: 0.3, opacity: 0.3 });
          t2.to(
            ".dd-text",
            // { scale: 0.3, opacity: 0.3 },
            {
    