Xem ảnh demo:
1. Chèn toàn bộ code bên dưới vào trên thẻ /body
<!--=== BEGIN: SITE PHẢI ===-->
<div class='site_supporrt'>
<div class='ss_item window_popup'>
<div class='i_title'><img alt='' src='https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEi4__avsFsZ8-y5cM3wdGi3EdB_8sLUaefo8J4EMx6zEP4ArbGGRQ5uDjYKU8LqFa08SHCqpNN5_J9AvJcpRjTgcF68wfpg0RAjgtKrmR-_Wx_kY-VxjinIAneQ7vfJRJEwoVvrCp08V14/s1600/img_face.png' title=''/></div>
<div class='i-content' style='border-color: #193c86'><div class='fb-page' data-adapt-container-width='true' data-height='400' data-hide-cover='false' data-href='https://www.facebook.com/huynhphungblogger' data-show-facepile='true' data-show-posts='false' data-small-header='false' data-tabs='messages' data-width='250'/></div>
</div>
<div class='ss_item window_popup'>
<div class='i_title'><img alt='' src='https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEhc-vkZGbvhl69iGm8HF7uqA1T_rEXov7yTohMk38UcmTaLlUHujjHxfOzsfKW0txXVdRNgGV2gqvA_yaGfgwNcQvmkN8HGEeq_pqGyHPuhkw7YN2km-Vi4DdCGPM14NuEey1vEeDMl6hc/s1600/img_hotline.png' title=''/></div>
<div class='i-content' style='border-color: #1387c0'>
<div class='ss_online'>
<div>Liên hệ hỗ trợ</div>
<a class='number_phone' href='tel:0932913631'><i class='fa fa-phone'/>0932.913.631</a>
<ul>
<li>
<a href='#'><img alt='' src='https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEi1V8g4ItYtxcMb2Vf7Qmx_zRvBOyT13a2JmiPrYDxaV7v8fBit0TrCY-WpBJgO-ZB6gO9HCyjZ8xrG46nIDMM-BsFM_KEWARg8gg7ZOskUeClKZmjbdsgHSVBSRBi2S6FShKcJ9lkN8Fs/s1600/icon-skype.png' title=''/><span>skype</span></a>
</li>
</ul>
</div>
</div>
</div>
<div class='ss_item1'>
<div class='i_title'><a href='/p/contact.html'><img alt='' src='https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEhIa2b2nUCcCTnn3qZLJ-SrHNDTKOprd8gmlGmQ6Hs5OtDwZ3sf4XCe3HGJyzys_2thKYxBPiflz6ZBONF26FMleA0QTmYF5MBxc4qGY2jPDWQ6GnxEGEKdIGzfNujZ-8gaWIowxe3P-0Q/s118/img_contact.png' title=''/></a></div>
</div>
</div>
<!--=== END: SITE PHẢI ===-->
<style>
.site_supporrt .ss_item1{ pointer-events: auto;
position: relative;
margin-bottom: 5px;
-webkit-transition: all .5s ease;
-moz-transition: all .5s ease;
-o-transition: all .5s ease;
transition: all .5s ease;}
.site_supporrt{z-index:999999;position:fixed;pointer-events:none;top:50%;right:0;z-index:100;-webkit-transform:translate(0,-50%);-moz-transform:translate(0,-50%);-o-transform:translate(0,-50%);-ms-transform:translate(0,-50%);transform:translate(0,-50%)}
.site_supporrt .ss_item{pointer-events:auto;position:relative;margin-bottom:5px;-webkit-transition:all .5s ease;-moz-transition:all .5s ease;-o-transition:all .5s ease;transition:all .5s ease}.site_supporrt .ss_item .i_title{width:40px;cursor:pointer}
.site_supporrt .ss_item .i-content{position:absolute;top:0;left:100%;border:1px solid;border-right:0;width:290px;padding:12px 9px;background:#fff}.site_supporrt .ss_item:hover{z-index:1;-webkit-transform:translate(290px,0);-moz-transform:translate(290px,0);-o-transform:translate(290px,0);-ms-transform:translate(290px,0);transform:translate(-290px,0)}.site_supporrt .ss_item .ss_online{padding-left:13px;font-size:16px;line-height:25px}
.ss_online .number_phone{padding:5px 0;font-size:20px;line-height:25px;font-weight:bold;color:#007dbb}.ss_online .number_phone i{font-size:20px;line-height:25px;padding-right:10px;color:#303030}
.ss_online ul{margin:10px 0}.ss_online ul li{display:inline-block;vertical-align:top;margin-right:25px}.ss_online ul li img{width:26px;margin-right:10px}
.ss_online ul li a{font-size:16px;line-height:25px}
</style>
2. Chèn dưới thẻ <body> mã script để hiện fanpage
<div id='fb-root'/><script>(function(d, s, id) {var js, fjs = d.getElementsByTagName(s)[0];if (d.getElementById(id)) {return;}js = d.createElement(s); js.id = id;js.src = "//connect.facebook.net/vi_VN/all.js#xfbml=1";fjs.parentNode.insertBefore(js, fjs);}(document, 'script', 'facebook-jssdk'));</script>
P/s nếu trang blog nào đã có mã script này rồi thì bỏ qua bước 2
Lưu lại và xem kết quả nhé
Chúc bạn thành công!