修复样式文件中的注释错误，确保过渡效果和内边距设置生效；优化背景透明度设置，提升视觉效果。

src/@core/scss/base/_default-layout-w-vertical-nav.scss

@@ -17,7 +17,7 @@ $header: ".layout-navbar";
   @if variables.$vertical-nav-navbar-style == "elevated" {
     // Add transition
     #{$header} {
-      // transition: padding 0.2s ease, background-color 0.18s ease;
+      transition: padding 0.2s ease, background-color 0.18s ease;
     }
 
     // If navbar is contained => Add border radius to header

src/@core/scss/base/placeholders/_default-layout-vertical-nav.scss

@@ -11,7 +11,7 @@
 
   // If navbar is contained => Squeeze navbar content on scroll
   @if variables.$layout-vertical-nav-navbar-is-contained {
-    // padding-inline: 1rem;
+    padding-inline: 1rem;
   }
 }
 
@@ -36,8 +36,7 @@
     block-size: calc(variables.$layout-vertical-nav-navbar-height + variables.$vertical-nav-floating-navbar-top + 0.5rem);
     content: "";
     inset-block-start: -(variables.$vertical-nav-floating-navbar-top);
-    inset-inline-end: 0;
-    inset-inline-start: 0;
+    inset-inline: 0;
     /* stylelint-disable property-no-vendor-prefix */
     -webkit-mask: linear-gradient(black, black 18%, transparent 100%);
     mask: linear-gradient(black, black 18%, transparent 100%);

src/@core/scss/base/placeholders/_misc.scss

@@ -1,10 +1,6 @@
 %blurry-bg {
     position: relative;
-    /* stylelint-disable property-no-vendor-prefix */
-    // -webkit-backdrop-filter: blur(6px);-webkit-backdrop-filter-webkit-backdrop-filter-webkit-backdrop-filter
-    // backdrop-filter: blur(6px);backdrop-filterbackdrop-filterbackdrop-filter
-    /* stylelint-enable */
-    background-color: transparent;
+    background: transparent;
     box-shadow: none;
     
     &::before {