How can I make a thin border around text

Question

I am using

\noindent\fbox{%
    \parbox{\textwidth}{%
        text
    }%
}

For a box around text like this:

I want to make a morest thin border.

I don't know how.

Answer 1

The thickness of the rule is determined by the length \fboxrule. For a thinner rule, set it to a small value

\setlength{\fboxrule}{0.1pt}

Or as you think best. You will have to experiment to find a suitable thickness. The default is 0.4pt.