bg-green-100
: Sets a light green background.
border
: Applies a default 1px solid border.
border-green-400
: Colors the border with a medium green.
text-green-700
: Sets a dark green text color for contrast.
px-4
: Adds horizontal padding.
py-3
: Adds vertical padding.
rounded
: Applies rounded corners.
relative
: (Optional, often used if you want to add absolutely positioned elements inside like a close button).