gros logo mode sombre

content/_index.md

@@ -4,7 +4,11 @@ title = "Librezo"
 leaflet = 1
 +++
 
-<img class="big-logo" alt="Logo Librezo" src="/img/logo-color-light.png"/>
+<picture>
+	<source srcset="/img/logo-color-dark.png" media="(prefers-color-scheme: dark)" />
+	<source srcset="/img/logo-color-light.png" media="(prefers-color-scheme: light), (prefers-color-scheme: no-preference)" />
+	<img decoding="async" class="big-logo" src="/img/logo-color-light.png" alt="Logo Librezo" aria-hidden/>
+</picture>
 
 <span class="slogan3">Collectif d'artisans numériques</span>