fixed table of contents sticking on all pages; more minor changes

src/lib/header.svelte

@@ -1,11 +1,3 @@
-<!-- <div class="center-stuff">
-    <p class="banner-text" style="margin-right: 8px;">denizk0461's</p>
-    <a class="banner-image" href="/">
-        <img src="/favicon.webp" alt="Favicon">
-    </a>
-    <p class="banner-text" style="margin-left: 8px;">website</p>
-</div> -->
-
 <div class="header-container">
     <div class="header-content">
         <a class="favicon" href="/">
@@ -25,7 +17,6 @@
     .header-container {
         margin: 0 0 ;
         padding: 0;
-        background-color: transparent;
     }
 
     .header-content {