WE can add indent to a group of text or multiline of text by using blockquote html tag. This is usually used when we write long text and in between we want to keep some text differently from main text lines.
<blockquote> This is some text inside </blockquote>
Let us try with some more line of text.
This is normal text without any formatting . Normal text tet only
This is within blockquote tag so it will be displayed like this , with added indent to the text display
This is after blockquote text so no indenting here