what is full form of em in css
Em (typography) In Cascading Style Sheets, the em unit is the height of the font in nominal points or inches. The actual, physical height of any given portion of the font depends on the user-defined DPI setting, current element font-size, and the particular font being used.
Sagging (fashion) It is often claimed the style originated from the United States prison system where belts are sometimes prohibited[9] and there can be a lack of appropriately sized clothing.[5][10]