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

source/js/search/algolia.js

@@ -1,7 +1,7 @@
 $(function () {
   const openSearch = () => {
     $('body').css({ width: '100%', overflow: 'hidden' })
-    $('#algolia-search').css('display', 'block')
+    $('#algolia-search .search-dialog').css('display', 'block')
     $('.ais-search-box--input').focus()
     $('#search-mask').fadeIn()
     // shortcut: ESC
@@ -15,12 +15,12 @@ $(function () {
 
   const closeSearch = () => {
     $('body').css({ width: '', overflow: '' })
-    $('#algolia-search').css({
+    $('#algolia-search .search-dialog').css({
       animation: 'search_close .5s'
     })
 
     setTimeout(function () {
-      $('#algolia-search').css({
+      $('#algolia-search .search-dialog').css({
         animation: '',
         display: 'none'
       })