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.
Service stripe A service stripe, commonly called a hash mark, is an embroidered diagonal stripe of the United States military which is authorized for wear by enlisted members on the left sleeve of a uniform to denote length of service. Service stripes vary in color.