In CSS, you can create animations using the `@keyframes` rule and apply them to elements using the `animation` property. Here's a basic example of how to animate an element in CSS: 
/* Define the animation keyframes */
@keyframes myAnimation {
  0% {
    /* Initial state */
    transform: scale(1);
  }
  50% {
    /* Intermediate state */
    transform: scale(1.5);
  }
  100% {
    /* Final state */
    transform: scale(1);
  }
}

/* Apply the animation to an element */
.my-element {
  animation: myAnimation 2s infinite;
}
In this example, we define an animation called `myAnimation` using the `@keyframes` rule. The `@keyframes` rule allows you to specify different stages of the animation by setting CSS properties at different percentage points. In this case, we define three stages: 0%, 50%, and 100%. Next, we apply the animation to an element with the class `.my-element` using the `animation` property. The `animation` property takes several values separated by spaces. The first value is the name of the animation (`myAnimation`), followed by the duration of the animation (`2s` in this case), and finally, any additional animation properties such as timing function or delay. In the example above, the animation will scale the element from its initial size to 1.5 times its size and then back to the initial size, creating a simple pulsating effect. The animation will repeat indefinitely (`infinite`) until stopped or removed. You can customize the animation by changing the CSS properties within the `@keyframes` rule and adjusting the animation properties applied to the element. You can animate various CSS properties such as `transform`, `opacity`, `color`, `width`, and more. CSS animations provide a wide range of possibilities for creating engaging and dynamic effects on web pages. You can explore different animation properties, timing functions, and keyframe percentages to achieve the desired animation effects.