{"id":4533,"date":"2025-10-21T23:49:57","date_gmt":"2025-10-21T21:49:57","guid":{"rendered":"https:\/\/tswanhosting.com\/learn\/?p=4533"},"modified":"2025-10-21T23:49:59","modified_gmt":"2025-10-21T21:49:59","slug":"css-personnalise-wordpress","status":"publish","type":"post","link":"https:\/\/tswanhosting.com\/learn\/wordpress\/css-personnalise-wordpress\/","title":{"rendered":"CSS personnalis\u00e9 WordPress"},"content":{"rendered":"<p>Vous avez choisi un th\u00e8me WordPress qui vous pla\u00eet, mais il y a toujours ce petit d\u00e9tail qui vous chagrine : la couleur d&rsquo;un titre, la taille d&rsquo;un bouton, l&rsquo;espacement entre deux sections. Vous aimeriez avoir un contr\u00f4le total sur l&rsquo;apparence de votre site, sans pour autant devoir cr\u00e9er un th\u00e8me de A \u00e0 Z. C&rsquo;est pr\u00e9cis\u00e9ment l\u00e0 qu&rsquo;intervient le CSS personnalis\u00e9. En effet, WordPress offre des outils int\u00e9gr\u00e9s et s\u00e9curis\u00e9s pour vous permettre d&rsquo;ajouter vos propres r\u00e8gles de style CSS. Ces r\u00e8gles viennent &quot;par-dessus&quot; celles de votre th\u00e8me, vous donnant le pouvoir de peaufiner chaque pixel de votre design. Oubliez la frustration de ne pas pouvoir changer un \u00e9l\u00e9ment ; nous allons vous montrer comment devenir le v\u00e9ritable ma\u00eetre du style de votre site.<\/p>\n<h2>Pourquoi utiliser du CSS personnalis\u00e9 (et non modifier le th\u00e8me) ?<\/h2>\n<p>Lorsqu&rsquo;on d\u00e9bute, la tentation est grande de modifier directement le fichier <code>style.css<\/code> de son th\u00e8me. C&rsquo;est une tr\u00e8s mauvaise id\u00e9e. La raison est simple : \u00e0 la prochaine mise \u00e0 jour de votre th\u00e8me, toutes vos modifications seront \u00e9cras\u00e9es et perdues \u00e0 jamais.<\/p>\n<p>Le CSS personnalis\u00e9, ajout\u00e9 via les m\u00e9thodes appropri\u00e9es, est stock\u00e9 s\u00e9par\u00e9ment dans la base de donn\u00e9es de votre site. Par cons\u00e9quent, il reste intact, peu importe les mises \u00e0 jour de votre th\u00e8me ou de vos plugins. C&rsquo;est la m\u00e9thode s\u00fbre et professionnelle pour personnaliser votre design.<\/p>\n<h2>M\u00e9thode 1 : L&rsquo;Outil de Personnalisation de WordPress (Recommand\u00e9)<\/h2>\n<p>Pour 99% des utilisateurs, c&rsquo;est la meilleure et la plus simple des m\u00e9thodes. WordPress int\u00e8gre un \u00e9diteur de CSS personnalis\u00e9 qui offre un avantage majeur : un aper\u00e7u en direct de vos modifications.<\/p>\n<ol>\n<li>Connectez-vous \u00e0 votre tableau de bord WordPress.<\/li>\n<li>Dans le menu de gauche, allez dans <strong>Apparence &gt; Personnaliser<\/strong>.<\/li>\n<li>Dans le menu du Personnaliseur, cherchez l&rsquo;onglet <strong>&quot;CSS additionnel&quot;<\/strong> (ou &quot;Additional CSS&quot;). Il se trouve g\u00e9n\u00e9ralement tout en bas.<\/li>\n<li>Une bo\u00eete de texte s&rsquo;ouvre. Vous pouvez y \u00e9crire ou y coller votre code CSS.<\/li>\n<li>Pendant que vous tapez, vous verrez vos modifications s&rsquo;appliquer en temps r\u00e9el sur l&rsquo;aper\u00e7u de votre site \u00e0 droite.<\/li>\n<li>Une fois que vous \u00eates satisfait, cliquez sur le bouton bleu <strong>&quot;Publier&quot;<\/strong> en haut de l&rsquo;\u00e9cran.<\/li>\n<\/ol>\n<p>Cet outil est parfait pour ajouter quelques lignes de code et voir imm\u00e9diatement leur effet sans aucun risque de casser votre site.<\/p>\n<p><img decoding=\"async\" src=\"https:\/\/tswanhosting.com\/learn\/wp-content\/uploads\/2025\/10\/illustration-css-additionnel-wordpress.png\" alt=\"Infographie montrant le chemin &quot;Apparence &gt; Personnaliser &gt; CSS additionnel&quot; dans WordPress avec un exemple de code CSS dans la bo\u00eete.\" \/><\/p>\n<h2>Comment trouver le bon s\u00e9lecteur CSS \u00e0 modifier ?<\/h2>\n<p>Le plus grand d\u00e9fi n&rsquo;est pas d&rsquo;\u00e9crire le CSS, mais de savoir <em>quel<\/em> \u00e9l\u00e9ment cibler. Pour cela, l&rsquo;outil &quot;Inspecter&quot; de votre navigateur (Chrome, Firefox, etc.) est votre meilleur ami.<\/p>\n<ol>\n<li>Sur la page de votre site, faites un clic droit sur l&rsquo;\u00e9l\u00e9ment que vous souhaitez modifier (par exemple, un titre).<\/li>\n<li>Dans le menu qui appara\u00eet, choisissez <strong>&quot;Inspecter&quot;<\/strong>.<\/li>\n<li>Une nouvelle fen\u00eatre s&rsquo;ouvrira (les &quot;Outils de d\u00e9veloppement&quot;), affichant le code HTML de la page. La ligne correspondant \u00e0 votre \u00e9l\u00e9ment sera surlign\u00e9e.<\/li>\n<li>Regardez les attributs <code>class<\/code> ou <code>id<\/code> de cet \u00e9l\u00e9ment. Par exemple, vous pourriez voir <code>&lt;h2 class=\"titre-section\"&gt;Mon Titre&lt;\/h2&gt;<\/code>. Le s\u00e9lecteur que vous devez utiliser est donc <code>.titre-section<\/code>.<\/li>\n<li>Vous pouvez alors \u00e9crire votre r\u00e8gle dans la section &quot;CSS additionnel&quot; :\n<pre><code class=\"language-css\">.titre-section {\n    color: #c72c41; \/* La couleur rouge Tswan *\/\n    font-size: 28px;\n}<\/code><\/pre>\n<\/li>\n<\/ol>\n<h2>Autres m\u00e9thodes pour ajouter du CSS personnalis\u00e9<\/h2>\n<p>Bien que le Personnaliseur soit id\u00e9al, il existe d&rsquo;autres options pour des besoins plus sp\u00e9cifiques.<\/p>\n<h3>Utiliser un plugin d\u00e9di\u00e9<\/h3>\n<p>Des plugins comme &quot;Simple Custom CSS&quot; ou &quot;SiteOrigin CSS&quot; vous permettent d&rsquo;ajouter du CSS de la m\u00eame mani\u00e8re. Leur avantage est parfois une meilleure organisation du code ou des fonctionnalit\u00e9s suppl\u00e9mentaires, mais pour de simples ajustements, ils ne sont pas forc\u00e9ment n\u00e9cessaires.<\/p>\n<h3>Cr\u00e9er un th\u00e8me enfant (m\u00e9thode avanc\u00e9e)<\/h3>\n<p>Si vous pr\u00e9voyez de faire des modifications tr\u00e8s importantes et nombreuses (des centaines de lignes de CSS, mais aussi des modifications des fichiers de template PHP), la m\u00e9thode la plus propre est de cr\u00e9er un <strong>th\u00e8me enfant<\/strong>. Un th\u00e8me enfant h\u00e9rite de tout le style et de toutes les fonctionnalit\u00e9s de son th\u00e8me parent, mais vous permet d&rsquo;ajouter vos propres modifications dans son propre fichier <code>style.css<\/code>. C&rsquo;est la m\u00e9thode utilis\u00e9e par les d\u00e9veloppeurs professionnels et les agences comme <a href=\"https:\/\/tswanhosting.com\/logiciels\">Tswan Softwares<\/a> pour des projets de grande envergure. Cependant, pour de petits ajustements, c&rsquo;est une solution excessive.<\/p>\n<p>En conclusion, la fonctionnalit\u00e9 &quot;CSS additionnel&quot; de WordPress est une porte d&rsquo;entr\u00e9e formidable vers la personnalisation de votre site. Elle vous donne le pouvoir de peaufiner votre design sans risque. En apprenant \u00e0 utiliser l&rsquo;inspecteur de votre navigateur pour trouver les bons s\u00e9lecteurs, vous pourrez modifier presque n&rsquo;importe quel \u00e9l\u00e9ment visuel de votre site, le tout h\u00e9berg\u00e9 sur une plateforme rapide et fiable comme celle de <a href=\"https:\/\/tswanhosting.com\/hebergement-web\">Tswan Hosting<\/a>.<\/p>\n<p><img decoding=\"async\" src=\"https:\/\/tswanhosting.com\/learn\/wp-content\/uploads\/2025\/10\/cta-hebergement-personnalisable.png\" alt=\"Banni\u00e8re publicitaire pour l&#039;h\u00e9bergement WordPress enti\u00e8rement personnalisable de Tswan\" \/><\/p>\n","protected":false},"excerpt":{"rendered":"<p>Vous avez choisi un th\u00e8me WordPress qui vous pla\u00eet, mais il y a toujours ce petit d\u00e9tail qui vous chagrine : la couleur d&rsquo;un titre, la taille d&rsquo;un bouton, l&rsquo;espacement entre deux sections. Vous aimeriez avoir un contr\u00f4le total sur l&rsquo;apparence de votre site, sans pour autant devoir cr\u00e9er un th\u00e8me de A \u00e0 Z. [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[186,55],"tags":[270,269,165,271,66,195,89],"class_list":{"0":"post-4533","1":"post","2":"type-post","3":"status-publish","4":"format-standard","6":"category-tutoriel","7":"category-wordpress","8":"tag-css-additionnel","9":"tag-css-personnalise","10":"tag-design-web","11":"tag-personnaliser-theme","12":"tag-tswan-hosting","13":"tag-tutoriel-wordpress","14":"tag-wordpress"},"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v26.1.1 - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>CSS personnalis\u00e9 WordPress - Tswan Learn<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/tswanhosting.com\/learn\/wordpress\/css-personnalise-wordpress\/\" \/>\n<meta property=\"og:locale\" content=\"fr_FR\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"CSS personnalis\u00e9 WordPress - Tswan Learn\" \/>\n<meta property=\"og:description\" content=\"Vous avez choisi un th\u00e8me WordPress qui vous pla\u00eet, mais il y a toujours ce petit d\u00e9tail qui vous chagrine : la couleur d&rsquo;un titre, la taille d&rsquo;un bouton, l&rsquo;espacement entre deux sections. Vous aimeriez avoir un contr\u00f4le total sur l&rsquo;apparence de votre site, sans pour autant devoir cr\u00e9er un th\u00e8me de A \u00e0 Z. 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