CSS (Cascading Style Sheets) is essential for styling web pages, and mastering layout techniques like Flexbox and Grid is key to creating flexible and well-structured designs.

Flexbox is a one-dimensional layout model that allows you to distribute space along a single axis—either horizontally or vertically. It’s great for arranging items in a row or a column, aligning them, and distributing space within a container. Flexbox provides powerful alignment and spacing options that make it easy to design responsive layouts.

Grid, on the other hand, is a two-dimensional layout system that allows you to create complex layouts by dividing a page into rows and columns. Unlike Flexbox, which focuses on aligning items in one direction, Grid lets you control both rows and columns simultaneously, enabling more intricate and structured layouts. With Grid, you can place items in specific areas of the grid and control their size and position with greater precision.

Both techniques complement each other well, and using them together can help you create versatile and responsive web designs. Flexbox is often used for simpler, linear layouts, while Grid is ideal for more complex designs requiring precise placement of elements.