CSS Flexbox Complete Guide: Modern Layouts Made Easy

Flexbox is a powerful layout system that makes it easy to design flexible responsive layouts without floats or positioning.

Flex Container Basics

.container {
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: 1rem;
}

.item {
    flex: 1; /* Equal width for all items */
    padding: 1rem;
}

Flex Direction and Wrap

.container {
    display: flex;
    flex-direction: row; /* row, column, row-reverse, column-reverse */
    flex-wrap: wrap; /* wrap, nowrap, wrap-reverse */
}

Justify Content and Align Items

.container {
    /* Main axis alignment */
    justify-content: flex-start; /* flex-end, center, space-between, space-around */
    
    /* Cross axis alignment */
    align-items: stretch; /* flex-start, flex-end, center, baseline */
}

Responsive Navigation

.navbar {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.nav-links {
    display: flex;
    gap: 2rem;
}

@media (max-width: 768px) {
    .navbar {
        flex-direction: column;
    }
}

Centering Content

.center-box {
    display: flex;
    justify-content: center;
    align-items: center;
    height: 100vh;
}

Flexbox simplifies complex layouts. Practice these patterns for responsive design!