Flexbox
Flexbox (CSS Flexible Box Layout) is a CSS layout model designed for creating flexible and responsive one-dimensional layouts, allowing items within a container to align, distribute space, and adjust size dynamically. It simplifies complex layout tasks by providing properties to control direction, alignment, order, and growth of elements along a main axis and cross axis. This makes it ideal for building components like navigation bars, card grids, and centering content without relying on floats or positioning hacks.
Developers should learn Flexbox when building modern web interfaces that require responsive and adaptive designs, as it handles dynamic content and varying screen sizes efficiently. It is particularly useful for aligning items within containers, creating flexible grids, and managing space distribution in components like menus, forms, or image galleries. Using Flexbox reduces CSS complexity and improves maintainability compared to older layout methods.