CSS Flexbox & Grid Master Reference | Syntax & Alignment Grids

Home / Coding Reference / CSS Flex & Grid CSS3 Production Standard CSS Flexbox & Grid Master Reference Production-ready syntax grids for modern CSS layouts and container alignment. Flexbox Container (Parent) Property Common Values Function flex-direction row | column | row-reverse Sets the primary axis of the container. justify-content flex-start | center | space-between Aligns items along the **Main Axis**. align-items stretch | center | flex-end Aligns items along the **Cross Axis**. flex-wrap nowrap | wrap | wrap-reverse Defines if items should force onto a new line. CSS Grid Layout (Parent) Property Syntax Example Function grid-template-columns repeat(3, 1fr) | 200px 1fr Defines the width of track columns. gap 10px | 1rem 2rem Sets the spacing between rows and columns. grid-area header | 1 / 2 / 3 / 4 Assigns an item to a specific grid location. Performance Note: Use **Flexbox** for one-dimensional layouts (a row of buttons, a navigation bar) and **CSS Grid** for two-dimensional layouts (full page struc…