Why Does My Canvas Scroll Beyond Its Content, and How Can I Fix the Extra White Space?

Canvas Scrolling Overflows: Resolving White Space Issue

When using a canvas within a div and applying scroll functionality, it's common to encounter white space appearing at the bottom of the canvas, making the scroll extend beyond the canvas's content. To address this issue, consider the following solution:

Make the Canvas a Block Element

By default, canvases are inline elements, similar to images. This can lead to whitespace problems due to vertical alignment, as inline elements often have some vertical spacing. To resolve this, change the canvas's display property to 'block', making it a block-level element.

Here's the updated CSS:

canvas {
  display: block;
}

Alternative Option: Vertical Alignment

If setting the canvas to a block element doesn't work, try using vertical-align: top on the canvas. This will align the canvas vertically within its parent div, ensuring it scrolls just to the end of the canvas.

Updated CSS:

canvas {
  vertical-align: top;
}

By applying one of these solutions, you can constrain the scrolling range to the dimensions of the canvas, eliminating any unnecessary white space or exposure of the underlying div's color.

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