Use the <kbd> tag for keyboard inputs. DEMO Press CMD + B to bookmark this page! HTML < blockquote > Press < kbd > CMD </ kbd > + < kbd > B </ kbd > to bookmark this page ! </ blockquote >
Use element <mark> to highlight the text. DEMO Darkness imprisoning me , all that I see absolute horror. One by Metallica HTML Darkness < mark > imprisoning me </ mark > , all that I see absolute horror . < br >< em > One by Metallica </ em >