The blog discusses the CSS property "corner-shape," which allows developers to create custom corner shapes in web design without relying on complex techniques like SVGs or masking. This property, used in conjunction with "border-radius," enables the creation of shapes such as squircles, arrows, and other aesthetic designs with minimal code. While currently supported only by Chromium-based browsers like Chrome, Edge, and Opera, broader compatibility is anticipated. The blog explores the syntax and potential of "corner-shape," offering examples and encouraging experimentation to achieve unique visual effects. It also highlights additional properties for styling multiple corners and adapting designs to text direction, though support varies across browsers. The piece emphasizes the potential of "corner-shape" to simplify CSS and enhance creative possibilities in web design.