A super huge improvement in search.

- Added a cleanup button within input form.
- Optimized TopBar responsive effect(for search layout).
- Redesign the search results layout.

_includes/search-loader.html

@@ -0,0 +1,27 @@
+<!--
+  Jekyll Simple Search loader
+  © 2017-2019 Cotes Chung
+  MIT License
+-->
+<script src="https://cdn.jsdelivr.net/npm/simple-jekyll-search@1.7.3/dest/simple-jekyll-search.min.js" integrity="sha256-qcLR00zq6pJk4je3MLgAri8Nn+ZumUlXgTKR2H/xCY0=" crossorigin="anonymous"></script>
+
+{% capture result_elem %}
+<div class="pl-1 pr-1 pl-sm-2 pr-sm-2 pl-lg-4 pr-lg-4 pl-xl-0 pr-xl-0">
+  <a href="{{ site.url }}{url}">{title}</a>
+  <div class="post-meta d-flex flex-column flex-sm-row text-muted mt-1 mb-1">
+    <div class="mr-sm-4"><i class="far fa-folder fa-fw"></i>{categories}</div>
+    <div><i class="fa fa-tag fa-fw"></i>{tags}</div>
+  </div>
+  <p>{snippet}</p>
+</div>
+{% endcapture %}
+
+<script>
+SimpleJekyllSearch({
+  searchInput: document.getElementById('search-input'),
+  resultsContainer: document.getElementById('search-results'),
+  json: '{{ site.baseurl }}/search.json',
+  searchResultTemplate: '{{ result_elem }}',
+  noResultsText: '<p class="mt-5">Oops! No result founds.</p>'
+});
+</script>