feat(search): add local search (#231)

* feat(search): add local search

* docs: add docs for search

assets/css/_partial/_archive/_tags.scss

@@ -8,25 +8,18 @@
     position: relative;
     margin: 5px 10px;
     overflow-wrap: break-word;
-    -webkit-transition: all ease-out .3s;
-    -moz-transition: all ease-out .3s;
-    -o-transition: all ease-out .3s;
-    transition: all ease-out .3s;
+    @include transition(all ease-out 0.3s);
 
     &:active,
     &:focus,
     &:hover {
-      -webkit-transform: scale(1.2);
-      -moz-transform: scale(1.2);
-      -ms-transform: scale(1.2);
-      -o-transform: scale(1.2);
-      transform: scale(1.2);
+      @include transform(scale(1.2));
     }
 
     sup {
       color: $global-font-secondary-color;
 
-      .dark-theme & {
+      .dark & {
         color: $global-font-secondary-color-dark;
       }
     }

assets/css/_partial/_archive/_terms.scss

@@ -44,7 +44,6 @@
 
 .archive-item-link {
   display: inline-block;
-  text-decoration: none;
   overflow: hidden;
   text-overflow: ellipsis;
   white-space: nowrap;
@@ -55,15 +54,11 @@
     background-color: transparent;
   }
 
-  .dark-theme & {
+  .dark & {
     color: $global-link-color-dark;
-    text-decoration: none;
-    transition: color 0.2s ease, border-color 0.2s ease, background 0.2s ease, opacity 0.2s ease;
 
     &:hover {
       color: $global-link-hover-color-dark;
-      text-decoration: none;
-      transition: color 0.2s ease, border-color 0.2s ease, background 0.2s ease, opacity 0.2s ease;
     }
   }
 }
@@ -73,7 +68,7 @@
   text-align: right;
   color: $global-font-secondary-color;
 
-  .dark-theme & {
+  .dark & {
     color: $global-font-secondary-color-dark;
   }
 }