<ul data-eligibleForWebStory="true">Knowing CSS properties is crucial for transforming a webpage into a clean, responsive, and interactive experience.Important CSS properties include display for element behavior, position for element placement, and background for color and image customization.Other key properties like margin, padding, box-shadow, and border-radius are essential for creating modern UI effects.Learning and mastering these properties can lead to building beautiful and flexible UIs, enhancing frontend confidence.