Print style sheets can be introduced through link tags or media queries, and it is recommended to use @media print inline maintenance; 2. Common optimizations include: hiding non-essential elements such as navigation and sidebars; using visibility to control the printing area; adjusting fonts and rows to improve readability; ensuring that the picture table does not break across pages; adding URL addresses to the links; avoiding pagination breakpoints appearing in front of the title or list; 3. Actual skills include: avoiding dependence on background colors, controlling paging with page-break-before, and using print preview to test the effect; 4. By setting the .print-content class for the content area and matching the CSS visibility rules, you can only print the body content, thereby significantly improving the clarity and user experience of the print output.
CSS print stylesheets are very useful when you need to optimize print effects on web pages. By default, browsers will include all styles when printing pages, but we usually want to hide navigation, sidebars, buttons, etc. that are not suitable for printing, and adjust fonts, margins, etc. to make the printed content clearer.

Here is a practical example of CSS print styles that works for most web pages.
1. How to introduce a print style sheet
Add in in HTML:

<link rel="stylesheet" href="print.css" media="print">
Or use media query in the main stylesheet:
@media print { /* Printing style*/ }
It is recommended to use inline media queries for easy maintenance.

2. Common printing style optimization
@media print { /* Hide elements that do not need to be printed*/ .no-print, nav, Aside, footer, header, .sidebar, .navbar, .buttons, .ads { display: none !important; } /* Make sure the main content is displayed as block level and takes up the full width*/ body * { visibility: hidden; } .print-content, .print-content * { visibility: visible; } /* A container can be set as the printing area*/ .print-content { margin: 0 auto; max-width: 100%; padding: 0; } /* Adjust the title and paragraph style to improve readability*/ h1, h2, h3 { color: black; page-break-after: avoid; } p { font-size: 12pt; line-height: 1.4; color: black; } /* Keep the picture inside the page to avoid truncation*/ img { max-width: 100%; height: auto; display: block; page-break-inside: avoid; } /* Tables to avoid span breaks*/ table { page-break-inside: avoid; width: 100%; font-size: 10pt; } /* Add URL to the link (the link address is displayed when printing) */ a[href]:after { content: " (" attr(href) ")"; font-size: 90%; color: gray; } /* Avoid breaking of certain elements*/ thead { display: table-header-group; } /* Avoid adding pagination before these elements*/ h1, h2, figure, pre, ul, ol { page-break-before: avoid; } }
3. Actual usage skills
Use
visibility
to control the printing area
If you only want to print a certain part (such as the article body), you can usevisibility: hidden
to cooperate withvisibility: visible
to precise control.Avoid using background colors and picture printing
Most users do not print backgrounds by default, so do not rely on background colors to convey information:.highlight { background-color: #ff0; color: #000; } @media print { .highlight { background-color: transparent; } }
Add paging control
Controls the paging behavior of long content when printing:.page-break { page-break-before: always; }
Test printing effect
PressCtrl P
(or Cmd P) in Chrome to open the print preview and you can view the effect without actually printing.
4. Example: Print only article content
<article class="print-content"> <h1>Article Title</h1> <p>This is the main content...</p> </article> <aside class="no-print"> <p>This part will not be printed</p> </aside>
With the above CSS, only the article part will be output when printing.
Basically these core skills. The printing style is not complicated, but it is easy to ignore. Adding a piece of @media print
can greatly improve the user experience.
The above is the detailed content of css print stylesheet example. For more information, please follow other related articles on the PHP Chinese website!

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