Some GUIs use boxes with embossed borders to group widgets.
How do I create this look with HTML and CSS?
An embossed border is one that creates the illusion that an element comes forward out of the page in 3D. It is often created by making the top and left border lighter and the bottom and right border darker.
Most GUIs I see use a style similar to CSS's border-style: groove
for group boxes.
If you need to use a group box for your HTML forms, use <fieldset>
with <legend>
for the group label.