fix: 调整目录框位置和最大高度以改善布局

Signed-off-by: wangsimiao1 <wangsimiao1@xiaomi.com>

Author: WangSimiao2000

_sass/layout/_panel.scss

@@ -3,10 +3,7 @@
 @use '../abstracts/placeholders';
 
 .access {
-  top: 3rem;
   padding-top: 3rem;
-  position: -webkit-sticky;
-  position: sticky;
 
   > section {
     @extend %panel-border;
@@ -24,6 +21,18 @@
 }
 
 #panel-wrapper {
+  position: -webkit-sticky;
+  position: sticky;
+  top: 3rem;
+  align-self: start;
+  max-height: calc(100vh - 3rem);
+  overflow-y: auto;
+  scrollbar-width: none;
+
+  &::-webkit-scrollbar {
+    display: none;
+  }
+
   /* the headings */
   .panel-heading {
     font-family: inherit;

_sass/pages/_post.scss

@@ -261,12 +261,7 @@ header {
 }
 
 #toc-wrapper {
-  top: 0;
-  transition: top 0.2s cubic-bezier(0.22, 1, 0.36, 1);
-  overflow-y: auto;
-  max-height: 100vh;
-  scrollbar-width: none;
-  margin-top: 2rem;
+  padding-top: 2rem;
 
   &:not(.invisible) {
     -webkit-animation: fade-up 0.8s;