Before Flexbox, CSS used four primary layout modes: block for sections, inline for text, table for two-dimensional data, and positioned for explicit element placement. These modes often required workarounds, such as floats, to achieve complex designs. The Flexbox Layout Module introduced a more efficient and intuitive system for creating flexible, responsive layouts.
Flexbox is fully supported by all modern web browsers, ensuring a consistent experience across different platforms. This broad compatibility eliminates concerns about rendering issues when using Flexbox properties. As a result, it has become a standard tool for building reliable and responsive designs.
To implement Flexbox, you define a flex container in your HTML and apply Flexbox properties through CSS. The flex container organizes its child elements (flex items) with enhanced alignment, spacing, and ordering capabilities. For example, a simple flex container with three items is created using <div> elements styled with Flexbox properties.