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$\require{color} \require{enclose}$

写博客的一些技巧和工具。

To use the following three macros it is necessary to \require{color} first.

\colorbox : box with a background color
\colorbox{<color>}{<text>}
\colorbox{yellow}{text} $\colorbox{yellow}{text}$ $\colorbox{yellow}{$a^2+b^2=c^2$}$ \colorbox{yellow}{\$a^2+b^2=c^2\$}
Notice that the box is a bit too high when the content is pure text.

\fbox : framed box
\fbox{text} $\fbox{text}$ $\fbox{$a^2+b^2=c^2$}$ \fbox{\$a^2+b^2=c^2\$}
Again the box is a bit too high when the content is pure text.

\fcolorbox: a box with both a frame color and a background color.
\fcolorbox{<frame color>}{<background color>}{<text>}
\fcolorbox{red}{blue}{text} $\fcolorbox{red}{blue}{text}$ $\fcolorbox{red}{blue}{$a^2+b^2=c^2$}$ \fcolorbox{red}{blue}{\$a^2+b^2=c^2\$}

To use the \enclose macro you have to \require{enclose} first.
\enclose{roundedbox}{a^2+b^2 = c^2} $\enclose{roundedbox}{a^2+b^2 = c^2}$

References

https://chemistry.meta.stackexchange.com/q/3540