The content of a web page cannot be displayed on the full screen. This is usually due to the limitations of the web design. In web pages, they usually use the standard version of the browser to limit the size of the page to ensure that the web page can be displayed on a screen and does not exceed the browser's limitations. You can set the width and height of the page using the max width and max height attributes in your CSSs. These attributes limit the size of the page. For example, you can set the max width property to 1200px. This will limit the page width to 1200px without affecting other aspects of the page. In addition to using the CSS-style properties, you can also use javelin to adjust the page size to fit different screen sizes. For example, you can use javelin code to set the width and height of the page to fit different screen sizes. Therefore, the content of the webpage could not be displayed on the full screen. The size of the webpage had to be limited according to the limitations of the webpage design.