<script src='https://cdn.jsdelivr.net/gh/soykothasan/AJAX-Search@master/search.min.js?live=true&amp;image=true'/>

And with you have to add some CSS to giving a great look. Add this CSS on the below. Add this CSS below before the head tag.

CSS

<style type='text/css'>
/* Ajax Search */
*,*:before,*:after{-webkit-box-sizing:border-box;-moz-box-sizing:border-box;box-sizing:border-box}
.ajax-search{padding:20px;background:#fff!important;box-shadow:0 0 15px rgba(0,0,0,0.15);max-height:450px!important}
.ajax-search h3{font-size:14px;font-weight:normal;margin:0 0 20px 0}
.ajax-search li{position:relative;display:inline-block;float:left;width:50%;margin:0 0 10px 0;overflow:hidden}
.ajax-search li h4{font-size:13px;font-weight:normal;margin:0 15px 0 0}
.ajax-search li h4 a{color:#000;transition:all .3s}
.ajax-search li h4 mark{background-color:transparent;color:#000;text-decoration:underline;transition:all .3s}
.ajax-search li h4 a:hover,.ajax-search li h4:hover mark{color:#f44336}
.ajax-search-image{float:left;margin:0 10px 0 0}
.ajax-search-image img{border-radius:5px}
.ajax-search-pager a{display:inline-block;clear:both;overflow:hidden;background:#f44336;color:#fff;font-size:13px;padding:5px 10px;border-radius:3px;margin:15px auto 0 auto}
.ajax-search-pager a:hover{background:#333;color:#fff}
@media screen and (max-width:768px){.ajax-search li{position:relative;display:inline-block;float:left;width:100%;margin:0 0 10px 0;overflow:hidden}}
</style>

Click save and finish 😃

We recommend that you re-host the code in this link https://github.com/soykothasan/AJAX-Search/blob/master/search.js and look for this blog ID 7306907362038110667 then replace it with your blog ID.