CSS

Selectors tell CSS which elements to style — the most important early skill.

Every element is a box — understand this model and layouts start making sense.

Colors and fonts define a site's personality and the user's first impression.

When two rules conflict, you must know which wins — that's how you stay in control.

Flexbox is your first layout tool for any row or column — you'll use it everywhere.

Grid is CSS's most powerful layout system — ideal for two-dimensional page layouts.

More than half of web traffic is mobile — your site must work on every screen.

Positioning lets you layer elements like dropdowns, tooltips, and modals.

Smooth motion adds polish and guides the user's attention to what matters.

CSS variables let you manage colors and spacing in one place and build themes easily.

New CSS features (2024+) solve problems that once needed JavaScript or old hacks.

In large projects CSS becomes chaos fast — methodologies keep it organized and scalable.

Writing CSS well is the difference between a maintainable site and one you fear to touch.