Add a box-shadow to a Card-like Element

The box-shadow property applies one or more shadows to an element.

The box-shadow property takes the following values, in order:

• offset-x (how far to push the shadow horizontally from the element)
• offset-y (how far to push the shadow vertically from the element)
• blur-radius
• spread-radius
• color

The blur-radius and spread-radius values are optional.

Multiple box-shadows can be created by using commas to separate properties of each box-shadow element.

Here's an example of the CSS to create multiple shadows with some blur, at mostly-transparent black colors:

box-shadow: 0 10px 20px rgba(0,0,0,0.19), 0 6px 6px rgba(0,0,0,0.23);

The element now has an id of thumbnail. With this selector, use the example CSS values above to place a box-shadow on the card.