add html-validator + fix html ceo code

pages/books/[slug].vue

@@ -9,12 +9,7 @@
           <!--левый блок контента-->
           <section class="relative top-[-20px] min-w-[570px]">
             <div class="flex flex-col items-center">
-              <img
-                :src="book.img"
-                :alt="book.buttonText"
-                width="100%"
-                height="100%"
-              />
+              <img :src="book.img" :alt="book.buttonText" />
             </div>
           </section>
           <!--правый блок контента-->
@@ -68,12 +63,7 @@
                 class="flex flex-row mr-14 items-center justify-between lg:whitespace-nowrap"
               >
                 <li class="flex flex-row mr-14 gap-3 items-center">
-                  <img
-                    src="/img/svg/books/book-pages.svg"
-                    alt="страниц"
-                    width="100%"
-                    height="100%"
-                  />
+                  <img src="/img/svg/books/book-pages.svg" alt="страниц" />
                   <UiParagraph size="250" as="span">
                     {{ book.pages }}
                   </UiParagraph>
@@ -82,20 +72,13 @@
                   <img
                     src="/img/svg/books/book-illustrations.svg"
                     alt="иллюстраций"
-                    width="100%"
-                    height="100%"
                   />
                   <UiParagraph size="250" as="span">
                     {{ book.illust }}
                   </UiParagraph>
                 </li>
                 <li class="flex flex-row mr-14 gap-3 items-center">
-                  <img
-                    src="/img/svg/books/book-formats.svg"
-                    alt="формат"
-                    width="100%"
-                    height="100%"
-                  />
+                  <img src="/img/svg/books/book-formats.svg" alt="формат" />
                   <UiParagraph size="250" as="span">
                     {{ book.format }}
                   </UiParagraph>
@@ -170,7 +153,7 @@
         <!--нижний блок-->
         <section class="ml-20 mt-32">
           <div>
-            <UiHeading tag="H2" size="300" class="text-three">
+            <UiHeading tag="h2" size="300" class="text-three">
               Что ты узнаешь
             </UiHeading>
             <ul class="flex mt-20 flex-row items-center justify-between">

pages/books/[titlesSlug]/[titlesSlug].vue

@@ -16,7 +16,7 @@
           class="flex flex-col gap-4"
         >
           <!-- Main section title -->
-          <UiHeading tag="H2" size="300" class="text-three [&]:font-normal">
+          <UiHeading tag="h2" size="300" class="text-three [&]:font-normal">
             {{ section.title }}
           </UiHeading>