- one more time rework slider

- rework design system
- fill trainer page

src/components/Marquee.astro

@@ -16,7 +16,7 @@ const repeatedTexts =
     repeatedTexts.map((text) => (
       <>
         <h2>{text}</h2>
-        <Image src={wideCrossIconSrc} alt="cross-icon" />
+        <Image src={wideCrossIconSrc} alt="cross-icon" loading="eager" />
       </>
     ))
   }