Inline CSS is straightforward but has its drawbacks. It can make your HTML cluttered and harder to maintain, especially if the styles are complex or reused across multiple pages. However, for one-off pages or quick fixes, it's a handy tool.<\/p>
A more scalable approach is to use external CSS files but load them conditionally. This method keeps your CSS separate and maintainable while allowing you to include it only where needed. Here's how you can do it with JavaScript:<\/p>
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Techniques</a> </div> <div id="377j5v51b" class="Article_Details_main1L2s "> <a href="#Inline-CSS" title=" 1. Inline CSS" > 1. Inline CSS</a> </div> <div id="377j5v51b" class="Article_Details_main1L2s "> <a href="#External-CSS-with-Conditional-Loading" title=" 2. External CSS with Conditional Loading" > 2. External CSS with Conditional Loading</a> </div> <div id="377j5v51b" class="Article_Details_main1L2s "> <a href="#Server-Side-Inclusion" title=" 3. Server-Side Inclusion" > 3. Server-Side Inclusion</a> </div> <div id="377j5v51b" class="Article_Details_main1L2s "> <a href="#Personal-Experience-and-Tips" title=" Personal Experience and Tips" > Personal Experience and Tips</a> </div> <div id="377j5v51b" class="Article_Details_main1L2s "> <a href="#Performance-Considerations" title=" Performance Considerations" > Performance Considerations</a> </div> </div> </div> </div> <div id="377j5v51b" class="Article_Details_main1M"> <div id="377j5v51b" class="phpgenera_Details_mainL1"> <a href="http://m.miracleart.cn/" title="Home" class="phpgenera_Details_mainL1a">Home</a> <img src="/static/imghw/top_right.png" alt="" /> <a href="http://m.miracleart.cn/web-designer.html" class="phpgenera_Details_mainL1a">Web Front-end</a> <img src="/static/imghw/top_right.png" alt="" /> <a href="http://m.miracleart.cn/css-tutorial.html" class="phpgenera_Details_mainL1a">CSS Tutorial</a> <img src="/static/imghw/top_right.png" alt="" /> <span>How can I include CSS only on some pages?</span> </div> <div id="377j5v51b" class="Articlelist_txts"> <div id="377j5v51b" class="Articlelist_txts_info"> <h1 class="Articlelist_txts_title">How can I include CSS only on some pages?</h1> <div id="377j5v51b" class="Articlelist_txts_info_head"> <div id="377j5v51b" class="author_info"> <a href="http://m.miracleart.cn/member/1468483.html" class="author_avatar"> <img class="lazy" data-src="https://img.php.cn/upload/avatar/000/000/001/66ea83d367651601.png" src="/static/imghw/default1.png" alt="Robert Michael Kim"> </a> <div id="377j5v51b" class="author_detail"> <a href="http://m.miracleart.cn/member/1468483.html" class="author_name">Robert Michael Kim</a> </div> </div> </div> <span id="377j5v51b" class="Articlelist_txts_time">Jun 11, 2025 am 12:01 AM</span> <div id="377j5v51b" class="Articlelist_txts_infos"> <span id="377j5v51b" class="Articlelist_txts_infoss on">css</span> <span id="377j5v51b" class="Articlelist_txts_infoss ">Page style</span> </div> </div> </div> <hr /> <div id="377j5v51b" class="article_main php-article"> <div id="377j5v51b" class="article-list-left detail-content-wrap content"> <ins class="adsbygoogle" style="display:block; text-align:center;" data-ad-layout="in-article" data-ad-format="fluid" data-ad-client="ca-pub-5902227090019525" data-ad-slot="3461856641"> </ins> <p>There are three ways to selectively include CSS on a specific page: 1. Inline CSS, suitable for pages that are not frequently accessed or require unique styles; 2. Load external CSS files using JavaScript conditions, suitable for situations where flexibility is required; 3. Server-side inclusion, suitable for scenarios that use server-side languages. This approach can optimize website performance and maintainability, but requires balance of modularity and performance. </p> <p><img src="/static/imghw/default1.png" data-src="https://img.php.cn/upload/article/000/000/000/174957130349976.jpg" class="lazy" alt="How can I include CSS only on some pages?"></p> <p> Including CSS on specific pages can be a powerful way to optimize your website's performance and maintainability. Let's dive into how you can achieve this, along with some insights and personal experiences.</p> <p> When I started working on larger web projects, I quickly realized that not every page needed the same CSS. For instance, a contact page might not need the styling for a complex product carousel that's on the homepage. By selectively including CSS, you can reduce load times and make your CSS more modular and easier to manage.</p> <p> Here's how you can do it, along with some tips and tricks I've picked up along the way:</p> <h3 id="Selective-CSS-Inclusion-Techniques"> Selective CSS Inclusion Techniques</h3> <p> To include CSS only on specific pages, you have several options, each with its own set of pros and cons.</p> <h4 id="Inline-CSS"> 1. Inline CSS</h4> <p> For pages that are rarely visited or need unique styling, inline CSS can be a quick solution. Here's how you can do it:</p><pre class='brush:php;toolbar:false;'> <!DOCTYPE html> <html lang="en"> <head> <meta charset="UTF-8"> <meta name="viewport" content="width=device-width, initial-scale=1.0"> <title>Contact Us</title> <style> .contact-form { background-color: #f0f0f0; padding: 20px; border-radius: 5px; } </style> </head> <body> <div class="contact-form"> <!-- Your contact form here --> </div> </body> </html></pre><p> Inline CSS is straightforward but has its drawbacks. It can make your HTML cluttered and harder to maintain, especially if the styles are complex or reused across multiple pages. However, for one-off pages or quick fixes, it's a handy tool.</p><h4 id="External-CSS-with-Conditional-Loading"> 2. External CSS with Conditional Loading</h4><p> A more scalable approach is to use external CSS files but load them conditionally. This method keeps your CSS separate and maintainable while allowing you to include it only where needed. Here's how you can do it with JavaScript:</p><pre class='brush:php;toolbar:false;'> <!DOCTYPE html> <html lang="en"> <head> <meta charset="UTF-8"> <meta name="viewport" content="width=device-width, initial-scale=1.0"> <title>Homepage</title> </head> <body> <script> if (window.location.pathname === '/homepage') { var link = document.createElement('link'); link.rel = 'stylesheet'; link.href = 'homepage.css'; document.head.appendChild(link); } </script> <!-- Rest of your homepage content --> </body> </html></pre><p> This method gives you flexibility but requires JavaScript, which might not be ideal if you're aiming for a no-JS solution. Also, be cautious about the performance impact of dynamically loading CSS, as it might cause a flash of unstyled content (FOUC).</p><h4 id="Server-Side-Inclusion"> 3. Server-Side Inclusion</h4><p> If you're using a server-side language like PHP or ASP.NET, you can include CSS files conditionally on the server. Here's an example with PHP:</p><pre class='brush:php;toolbar:false;'> <!DOCTYPE html> <html lang="en"> <head> <meta charset="UTF-8"> <meta name="viewport" content="width=device-width, initial-scale=1.0"> <title><?php echo $pageTitle; ?></title> <?php if ($currentPage === 'contact') { echo '<link rel="stylesheet" href="contact.css">'; } elseif ($currentPage === 'homepage') { echo '<link rel="stylesheet" href="homepage.css">'; } ?> </head> <body> <!-- Your page content here --> </body> </html></pre><p> Server-side inclusion is powerful because it's done before the page is sent to the client, avoiding any FOUC issues. However, it requires server-side logic and might not be suitable for static sites or if you're using a different tech stack.</p><h3 id="Personal-Experience-and-Tips"> Personal Experience and Tips</h3><p> From my experience, a hybrid approach often works best. For instance, I use a base CSS file for common styles across all pages and then conditionally load additional CSS files for page-specific styleing. This keeps the overall CSS size down and makes it easier to manage.</p><p> One pitfall to watch out for is over-segmentation of your CSS. While it's great to keep CSS modular, too many small files can lead to increased HTTP requests, which can negatively impact performance. A good rule of thumb is to group related styles into a few larger files rather than having dozens of tiny ones.</p><p> Another tip is to use CSS preprocessors like Sass or Less. They allow you to write more modular CSS and can help with conditional inclusion through features like <code>@import</code> or mixins. Here's a quick example with Sass:</p><pre class='brush:php;toolbar:false;'> // base.scss body { font-family: Arial, sans-serif; } // homepage.scss @import 'base'; .homepage-hero { background-image: url('hero.jpg'); height: 500px; } // In your HTML <link rel="stylesheet" href="base.css"> <?php if ($currentPage === 'homepage') { ?> <link rel="stylesheet" href="homepage.css"> <?php } ?></pre><p> This approach allows you to keep your base styles consistent while adding page-specific styles only where needed.</p><h3 id="Performance-Considerations"> Performance Considerations</h3><p> When selectively including CSS, always keep performance in mind. Tools like Google PageSpeed ??Insights or WebPageTest can help you understand the impact of your CSS loading strategy. For instance, if you're using conditional loading, make sure the CSS is loaded as soon as possible to minimize FOUC.</p><p> Also, consider using CSS critical path inlining for above-the-fold content. This technique involves inlining the CSS needed for the initial viewport and then loading the rest of the CSS asynchronously. Here's how you might do it:</p><pre class='brush:php;toolbar:false;'> <!DOCTYPE html> <html lang="en"> <head> <meta charset="UTF-8"> <meta name="viewport" content="width=device-width, initial-scale=1.0"> <title>Homepage</title> <style> /* Critical CSS for above-the-fold content */ .header { background-color: #333; color: white; padding: 20px; } </style> <link rel="preload" href="styles.css" as="style" onload="this.onload=null;this.rel='stylesheet'"> <noscript><link rel="stylesheet" href="styles.css"></noscript> </head> <body> <header class="header"> <!-- Your header content --> </header> <!-- Rest of your page content --> </body> </html></pre><p> This method ensures that the user sees a styled page immediately while the rest of the CSS loads in the background.</p> <p> In conclusion, selectively including CSS on specific pages can significantly improve your website's performance and maintainability. Whether you choose inline CSS, conditional loading, or server-side inclusion, the key is to balance modularity with performance. From my experience, a thoughtful approach to CSS management can make a big difference in how your site feels to users.</p><p>The above is the detailed content of How can I include CSS only on some pages?. For more information, please follow other related articles on the PHP Chinese website!</p> </div> </div> <div id="377j5v51b" class="wzconShengming_sp"> <div id="377j5v51b" class="bzsmdiv_sp">Statement of this Website</div> <div>The content of this article is voluntarily contributed by netizens, and the copyright belongs to the original author. This site does not assume corresponding legal responsibility. 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this.src='/static/imghw/default1.png'" onerror="this.onerror=''; this.src='/static/imghw/default1.png'" class="lazy" data-src="https://img.php.cn/upload/ai_manual/001/246/273/173411529149311.jpg?x-oss-process=image/resize,m_fill,h_50,w_50" src="/static/imghw/default1.png" alt="Clothoff.io" /> </a> <div id="377j5v51b" class="phpmain_tab2_mids_info"> <a href="http://m.miracleart.cn/ai/clothoffio" title="Clothoff.io" class="phpmain_tab2_mids_title"> <h3>Clothoff.io</h3> </a> <p>AI clothes remover</p> </div> </div> <div id="377j5v51b" class="phpmain_tab2_mids_top"> <a href="http://m.miracleart.cn/ai/video-swap" title="Video Face Swap" class="phpmain_tab2_mids_top_img"> <img onerror="this.onerror=''; this.src='/static/imghw/default1.png'" onerror="this.onerror=''; this.src='/static/imghw/default1.png'" class="lazy" data-src="https://img.php.cn/upload/ai_manual/001/246/273/173414504068133.jpg?x-oss-process=image/resize,m_fill,h_50,w_50" src="/static/imghw/default1.png" alt="Video Face Swap" /> </a> <div id="377j5v51b" class="phpmain_tab2_mids_info"> <a href="http://m.miracleart.cn/ai/video-swap" title="Video Face Swap" class="phpmain_tab2_mids_title"> <h3>Video Face Swap</h3> </a> <p>Swap faces in any video effortlessly with our completely free AI face swap tool!</p> </div> </div> </div> <div id="377j5v51b" class="phpgenera_Details_mainR3_more"> <a href="http://m.miracleart.cn/ai">Show More</a> </div> </div> </div> <div id="377j5v51b" class="phpgenera_Details_mainR4"> <div id="377j5v51b" class="phpmain1_4R_readrank"> <div id="377j5v51b" class="phpmain1_4R_readrank_top"> <img onerror="this.onerror=''; 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The main values ??include 1. Hidden direct cropping; 2. Scroll always displays scroll bars; 3. Auto displays scroll bars as needed; 4. Overflow-x and overflow-y can control horizontal and vertical overflow respectively. 1. overflow:hidden is used to avoid overflow of content; 2. overflow:scroll is suitable for chat windows or fixed-size sidebars to keep the interface consistent; 3. overflow:auto is suitable for tables or user-generated content to achieve flexible scrolling; 4. Note when setting overflow-x and overflow-y independently</p> </div> <div id="377j5v51b" class="phphistorical_Version2_mids"> <a href="http://m.miracleart.cn/faq/1796818184.html" title="What future developments or upcoming features in CSS are you most excited about and why?" class="phphistorical_Version2_mids_img"> <img onerror="this.onerror=''; this.src='/static/imghw/default1.png'" src="/static/imghw/default1.png" class="lazy" data-src="https://img.php.cn/upload/article/001/253/068/174922655296497.jpg?x-oss-process=image/resize,m_fill,h_207,w_330" alt="What future developments or upcoming features in CSS are you most excited about and why?" /> </a> <a href="http://m.miracleart.cn/faq/1796818184.html" title="What future developments or upcoming features in CSS are you most excited about and why?" class="phphistorical_Version2_mids_title">What future developments or upcoming features in CSS are you most excited about and why?</a> <span id="377j5v51b" class="Articlelist_txts_time">Jun 07, 2025 am 12:15 AM</span> <p class="Articlelist_txts_p">The future development direction of CSS is exciting, and its core lies in the fact that language is gradually meeting the needs of modern web development. 1. The native cascade layer provides better style priority control to reduce specific conflicts; 2. The sub-grid supports the alignment of nested elements with the parent container to avoid redundant code; 3. Container query allows components to adapt based on container size to promote true component design; 4.:has() selector can set the conditional style according to the state of the internal element to reduce JavaScript dependencies. These features mark the positive evolution of CSS in a more expressive and logical direction. Some functions have been available in modern browsers. Familiarity with them in advance will help future project practices.</p> </div> <div id="377j5v51b" class="phphistorical_Version2_mids"> <a href="http://m.miracleart.cn/faq/1796821673.html" title="How can CSS be used to implement dark mode theming on a website?" class="phphistorical_Version2_mids_img"> <img onerror="this.onerror=''; this.src='/static/imghw/default1.png'" src="/static/imghw/default1.png" class="lazy" data-src="https://img.php.cn/upload/article/001/253/068/175026546127978.jpg?x-oss-process=image/resize,m_fill,h_207,w_330" alt="How can CSS be used to implement dark mode theming on a website?" /> </a> <a href="http://m.miracleart.cn/faq/1796821673.html" title="How can CSS be used to implement dark mode theming on a website?" class="phphistorical_Version2_mids_title">How can CSS be used to implement dark mode theming on a website?</a> <span id="377j5v51b" class="Articlelist_txts_time">Jun 19, 2025 am 12:51 AM</span> <p class="Articlelist_txts_p">ToimplementdarkmodeinCSSeffectively,useCSSvariablesforthemecolors,detectsystempreferenceswithprefers-color-scheme,addamanualtogglebutton,andhandleimagesandbackgroundsthoughtfully.1.DefineCSSvariablesforlightanddarkthemestomanagecolorsefficiently.2.Us</p> </div> <div id="377j5v51b" class="phphistorical_Version2_mids"> <a href="http://m.miracleart.cn/faq/1796819630.html" title="What are some common techniques for vertically centering content using CSS?" class="phphistorical_Version2_mids_img"> <img onerror="this.onerror=''; this.src='/static/imghw/default1.png'" src="/static/imghw/default1.png" class="lazy" data-src="https://img.php.cn/upload/article/001/253/068/174969524267927.jpg?x-oss-process=image/resize,m_fill,h_207,w_330" alt="What are some common techniques for vertically centering content using CSS?" /> </a> <a href="http://m.miracleart.cn/faq/1796819630.html" title="What are some common techniques for vertically centering content using CSS?" class="phphistorical_Version2_mids_title">What are some common techniques for vertically centering content using CSS?</a> <span id="377j5v51b" class="Articlelist_txts_time">Jun 12, 2025 am 10:27 AM</span> <p class="Articlelist_txts_p">Vertical centering content can be implemented in CSS in a variety of ways, the most direct way is to use Flexbox. 1. Use Flexbox: By setting the container to display:flex and in conjunction with align-items:center, vertical centering of child elements can be easily achieved; 2. Combination of absolute positioning and transform: suitable for absolute positioning elements, by setting top and left to 50% and then using translate (-50%,-50%) to achieve centering; 3. CSSGrid: Through display:grid and place-items:center, horizontal and vertical centering can be achieved at the same time. If only vertical centering is required, use align</p> </div> <div id="377j5v51b" class="phphistorical_Version2_mids"> <a href="http://m.miracleart.cn/faq/1796821675.html" title="Can you explain the difference between em, rem, px, and viewport units (vh, vw)?" class="phphistorical_Version2_mids_img"> <img onerror="this.onerror=''; this.src='/static/imghw/default1.png'" src="/static/imghw/default1.png" class="lazy" data-src="https://img.php.cn/upload/article/001/253/068/175026548296245.jpg?x-oss-process=image/resize,m_fill,h_207,w_330" alt="Can you explain the difference between em, rem, px, and viewport units (vh, vw)?" /> </a> <a href="http://m.miracleart.cn/faq/1796821675.html" title="Can you explain the difference between em, rem, px, and viewport units (vh, vw)?" class="phphistorical_Version2_mids_title">Can you explain the difference between em, rem, px, and viewport units (vh, vw)?</a> <span id="377j5v51b" class="Articlelist_txts_time">Jun 19, 2025 am 12:51 AM</span> <p class="Articlelist_txts_p">The topic differencebetweenem, Rem, PX, andViewportunits (VH, VW) LiesintheirreFerencepoint: PXISFixedandbasedonpixelvalues, emissrelative EtothefontsizeFheelementoritsparent, Remisrelelatotherootfontsize, AndVH/VwarebaseDontheviewporttimensions.1.PXoffersprecis</p> </div> </div> <a href="http://m.miracleart.cn/web-designer.html" class="phpgenera_Details_mainL4_botton"> <span>See all articles</span> <img src="/static/imghw/down_right.png" alt="" /> </a> </div> </div> </div> </main> <footer> <div id="377j5v51b" class="footer"> <div id="377j5v51b" class="footertop"> <img src="/static/imghw/logo.png" alt=""> <p>Public welfare online PHP training，Help PHP learners grow quickly！</p> </div> <div id="377j5v51b" class="footermid"> <a href="http://m.miracleart.cn/about/us.html">About us</a> <a href="http://m.miracleart.cn/about/disclaimer.html">Disclaimer</a> <a href="http://m.miracleart.cn/update/article_0_1.html">Sitemap</a> </div> <div id="377j5v51b" class="footerbottom"> <p> ? php.cn All rights reserved </p> </div> </div> </footer> <input type="hidden" id="verifycode" value="/captcha.html"> <link rel='stylesheet' id='_main-css' href='/static/css/viewer.min.css?2' type='text/css' media='all' /> <footer> <div class="friendship-link"> <p>感谢您访问我们的网站，您可能还对以下资源感兴趣：</p> <a href="http://m.miracleart.cn/" title="国产av日韩一区二区三区精品">国产av日韩一区二区三区精品</a> <div class="friend-links"> </div> </div> </footer> <script> (function(){ var bp = document.createElement('script'); var curProtocol = window.location.protocol.split(':')[0]; if (curProtocol === 'https') { bp.src = 'https://zz.bdstatic.com/linksubmit/push.js'; } else { bp.src = 'http://push.zhanzhang.baidu.com/push.js'; } var s = document.getElementsByTagName("script")[0]; s.parentNode.insertBefore(bp, s); })(); </script> </body><div id="cag8u" class="pl_css_ganrao" style="display: none;"><strong id="cag8u"></strong><cite id="cag8u"></cite><strike id="cag8u"></strike><option id="cag8u"></option><tbody id="cag8u"></tbody><del id="cag8u"></del><strong id="cag8u"><s id="cag8u"><bdo id="cag8u"></bdo></s></strong><dfn id="cag8u"></dfn><optgroup id="cag8u"><del id="cag8u"><button id="cag8u"></button></del></optgroup><td id="cag8u"></td><cite id="cag8u"></cite><tr id="cag8u"></tr><table id="cag8u"></table><option id="cag8u"></option><wbr id="cag8u"><cite id="cag8u"><rt id="cag8u"></rt></cite></wbr><dfn id="cag8u"></dfn><tbody id="cag8u"></tbody><acronym id="cag8u"><del id="cag8u"><dfn id="cag8u"></dfn></del></acronym><tbody id="cag8u"></tbody><button id="cag8u"></button><object id="cag8u"><small id="cag8u"><abbr id="cag8u"></abbr></small></object><tfoot id="cag8u"><dd id="cag8u"><dl id="cag8u"></dl></dd></tfoot><input id="cag8u"></input><cite id="cag8u"></cite><pre id="cag8u"><xmp id="cag8u"><center id="cag8u"></center></xmp></pre><center id="cag8u"><dl id="cag8u"><s id="cag8u"></s></dl></center><ul id="cag8u"></ul><abbr id="cag8u"></abbr><input id="cag8u"></input><input id="cag8u"></input><tbody id="cag8u"></tbody><kbd id="cag8u"></kbd><optgroup id="cag8u"><ul id="cag8u"><option id="cag8u"></option></ul></optgroup><th id="cag8u"></th><pre id="cag8u"></pre><kbd id="cag8u"></kbd><tr id="cag8u"></tr><xmp id="cag8u"></xmp><strike id="cag8u"><source id="cag8u"><strong id="cag8u"></strong></source></strike><dfn id="cag8u"></dfn><td id="cag8u"><cite id="cag8u"><rt id="cag8u"></rt></cite></td><pre id="cag8u"></pre><nav id="cag8u"><li id="cag8u"><abbr id="cag8u"></abbr></li></nav><source id="cag8u"><tbody id="cag8u"><s id="cag8u"></s></tbody></source><table id="cag8u"></table><th id="cag8u"><td id="cag8u"><fieldset id="cag8u"></fieldset></td></th><tbody id="cag8u"></tbody><input id="cag8u"></input></div> </html>