3 Column Preview Card Component

Very good work!

Some details that may be useful to you:

• To make that annoying movement disappear when hovering over the buttons, simply add a border: 1px white solid to your btn class, you no longer need to have it in btn:hover.
• You could pass the CSS properties of the main directly to the body and eliminate that main, it's like it's left over. Although instead of <section class="component"> I would put it as <main class="component"> since it is the main content of the site.

hey @pohyongzhi

Try to fix "jumping" effect when hover over learn more buttons.

Good job