If the bottom margin for one element is 1.5em and the top margin for the element below it is 1em, how large is the margin between the two elements when the page is rendered in a browser

this allows people to make the best decision or pursue the best option. when alternatives are weighed using their advantages and disadvantages, the option whose disadvantages outweigh the advantages (based on a qualitative or quantitative analysis) are shunned while those whose advantages outweigh their disadvantages are pursued.