Fix hero image width for mobile

Author: nikoshell

src/components/sections/hero/hero.astro

@@ -125,7 +125,6 @@ const action2 = "/sponsorship/sponsor/";
 
   <div
     class="bluebox relative flex flex-col items-center justify-center"
-    style=""
   >
     <div class="bluebox-shift">
       <div class="hero-image overflow-hidden -mt-12">
@@ -136,7 +135,7 @@ const action2 = "/sponsorship/sponsor/";
             alt="EuroPython 2025 Conference"
             layout='full-width'
             formats={['avif', 'webp', 'jpeg']}
-            class="max-w-5xl lg:max-w-full h-auto lg:h-full rounded-2xl shadow-xl"
+            class="lg:max-w-full h-auto lg:h-full rounded-2xl shadow-xl"
             loading="eager"
             priority={true}
           />