Why Does My Image Have Unexpected Space Below It, and How Can I Fix It?

Image Displaying Unexpected Space Below: A Detailed Explanation

Problem:

Images, even when styled with zero padding and margin, often exhibit a mysterious empty space beneath them. This causes the image's border to be spaced away from the bottom edge.

Causes:

Images are treated as inline-block elements, which adhere to the baseline rule in typography. The baseline is the bottom line for most letters in a text block. However, certain letters, such as "p" and "q," extend below the baseline, necessitating space between the baseline and the bottom line to prevent overlap.

Fixing the Issue:

To eliminate the space beneath the image, adjust its vertical alignment using the following CSS:

img { vertical-align: bottom; }

This aligns the image to the bottom of its line, eliminating the unwanted space.

Potential Issue and Solution:

Small images, however, may now display space above them. To resolve this, add the following CSS to the container element:

line-height: 1px;

This sets the line height to a minimal value, ensuring that even small images are aligned correctly.

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