fix: 修復上個版本導致的代碼塊部分css沒有生成的bugs

fix: 修復valine背景圖片再次出現時，由左到右移動的bugs
improvement: 調大sidebar的寬度
improvement: html結構調整，mobile-sidebar改為sidebar/search調整
remove: 刪除多餘的css和pug

layout/includes/third-party/search/algolia.pug

@@ -1,12 +1,13 @@
-#algolia-search.search-dialog
-  #algolia-search-title.search-dialog__title Algolia
-  #algolia-input-panel
-    #algolia-search-input
-  hr
-  #algolia-search-results
-    #algolia-hits
-    #algolia-pagination
-    #algolia-stats
-  span.search-close-button
-    i.fas.fa-times
-#search-mask
+#algolia-search
+  .search-dialog
+    #algolia-search-title.search-dialog__title Algolia
+    #algolia-input-panel
+      #algolia-search-input
+    hr
+    #algolia-search-results
+      #algolia-hits
+      #algolia-pagination
+      #algolia-stats
+    span.search-close-button
+      i.fas.fa-times
+  #search-mask

layout/includes/third-party/search/local-search.pug

@@ -1,23 +1,24 @@
-#local-search.search-dialog
-  #local-search-title.search-dialog__title=_p("local_search.label")
-  #local-input-panel
-    #local-search-input
-      .local-search-box
-        input(placeholder=_p("local_search.input_placeholder") type="text").local-search-box--input
-  hr
-  #local-search-results
-    #local-hits
-    #local-stats
-      #hr.local-search-stats__hr
-        case config.language
-          when "zh-CN"
-            span=_p("local_search.by")
-            |  #[a(href="https://github.com/wzpan/hexo-generator-search" style={'color': '#49B1F5'}) hexo-generator-search]
-            |  #[span=_p("local_search.powered")]
-          when "en"
-          default
-            span=_p("local_search.powered_by")
-            |  #[a(href="https://github.com/wzpan/hexo-generator-search" style={'color': '#49B1F5'}) hexo-generator-search]
-  span.search-close-button
-    i.fas.fa-times
-#search-mask
+#local-search
+  .search-dialog
+    #local-search-title.search-dialog__title=_p("local_search.label")
+    #local-input-panel
+      #local-search-input
+        .local-search-box
+          input(placeholder=_p("local_search.input_placeholder") type="text").local-search-box--input
+    hr
+    #local-search-results
+      #local-hits
+      #local-stats
+        #hr.local-search-stats__hr
+          case config.language
+            when "zh-CN"
+              span=_p("local_search.by")
+              |  #[a(href="https://github.com/wzpan/hexo-generator-search" style={'color': '#49B1F5'}) hexo-generator-search]
+              |  #[span=_p("local_search.powered")]
+            when "en"
+            default
+              span=_p("local_search.powered_by")
+              |  #[a(href="https://github.com/wzpan/hexo-generator-search" style={'color': '#49B1F5'}) hexo-generator-search]
+    span.search-close-button
+      i.fas.fa-times
+  #search-mask