The box-shadow and drop-shadow features serve different purposes in web design. The box-shadow property is applied to an element's box model, making it ideal for regular HTML elements such as divs and buttons. Its syntax consists of offset values for the x and y axes, a blur radius, a spread radius, and a color. In contrast, the drop-shadow filter is applied to the content of the element, making it particularly effective for transparent images, icons, and SVGs. The syntax for drop-shadow involves a filter setting that specifies offset values, a blur radius, and a color. Additionally, while box-shadow is limited to box boundaries, drop-shadow follows the shape of the content, making it suitable for complex shapes. You can read this article to get some better ideas.