Why Do HTML5 Images in DIVs Have a 3px Bottom Margin, and How Can I Fix It?

HTML 5 Image Margin Anomaly: Solution Revealed

In HTML 5, a peculiar issue arises where images enclosed within a DIV element display an unexplained 3px bottom margin, despite the absence of CSS styling that mandates it. This anomaly has perplexed developers, disrupting the intended layout of their web pages.

The underlying cause of this behavior stems from the image being rendered as a text character. As such, it acts like text, leaving a space underneath it to accommodate hanging characters like "y" or "g." To rectify this, we must employ the vertical-align CSS property to explicitly indicate that no such space is necessary.

A wide range of vertical-align values can effectively address this issue; however, for aesthetic purposes, "middle" is a popular choice. By incorporating this:

img {
    vertical-align: middle;
}

into your CSS, you can eliminate the unwanted 3px bottom margin from images within DIV elements. This solution eliminates the anomaly, restoring the intended layout of your webpage.

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