h1 font-size: 1em line-height: 1.5 font-weight: bold margin: 1em 0 0 0Set negative text indent for list item in H Set paragraph to text-indent 3em in HTML an SIZE sets the size of the font. SIZE can have a value of 1 to 7, or -2 to 4. 3 indicates the "normal" size. The plus and minus values indicate a relative size to the current size. Bold tag in html is used to highlight marked portion of the text in bold. Bold tag differentiates the marked area from the rest.We can use class attribute in bold tag and manage the display properties.