Final answer:
In order to add a background image to your HTML, use the CSS background-image property and include the style tags within the head section of your HTML document.
Step-by-step explanation:
In order to incorporate a background image into your HTML, leverage the CSS background-image property.
Employ the following example within the <style> tags, typically placed in the <head> section of your HTML document:
<style> body {background image: url('image jpg'); } </style>
Ensure to substitute 'image jpg' with the appropriate path to your image file.
Additionally, you possess the flexibility to define other background properties such as size, position, and repetition as needed.
Remember to maintain the relative file path association between your HTML document and the image file.
By implementing these CSS styles, you seamlessly integrate a visually appealing background image, enhancing the aesthetic appeal and customization of your HTML content.