Less Framework 4. Every layout in Less Framework is based on a single grid, composed of 68 px columns with 24 px gutters.
The only measures that change from layout to layout are the amount of columns and the width of the outer margins. The three sets of typography presets are aligned to a 24 px baseline grid; one is based on 16 px body text, one on 17 px, and one on 18 px. Both sets contain several harmonious type sizes calculated using the Golden Ratio.
Technically The idea is to first code the Default Layout (992 px), and then use CSS3 media queries to code several child layouts: 768, 480, and 320 px. Free CSS Drop-Down Menu Framework. Description Free CSS Drop-Down Menu Framework was first released back in June, 2008.
Since then it has struck the audiences with its perfect cross browser performance and wide variety of drop-down menu transformations and themes. 10 frameworks JavaScript parmi les plus prometteurs.