Các bạn sao chép đơn code sau và dán vào trên thẻ đóng /body hoặc trên thẻ đóng </style> tùy cấu trúc từng template hoặc website của các bạn:
<style>
.fb-livechat,
.fb-widget {
display: none
}
.ctrlq.fb-button,
.ctrlq.fb-close {
position: fixed;
right: 10px;
cursor: pointer
}
.ctrlq.fb-button {
z-index: 999;
background: url(data:image/svg+xml;base64,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) center no-repeat #0084ff;
width: 60px;
height: 60px;
text-align: center;
bottom: 35px;
border: 0;
outline: 0;
border-radius: 60px;
-webkit-border-radius: 60px;
-moz-border-radius: 60px;
-ms-border-radius: 60px;
-o-border-radius: 60px;
box-shadow: 0 1px 6px rgba(0, 0, 0, .06), 0 2px 32px rgba(0, 0, 0, .16);
-webkit-transition: box-shadow .2s ease;
background-size: 80%;
transition: all .2s ease-in-out
}
.ctrlq.fb-button:focus,
.ctrlq.fb-button:hover {
transform: scale(1.1);
box-shadow: 0 2px 8px rgba(0, 0, 0, .09), 0 4px 40px rgba(0, 0, 0, .24)
}
.fb-widget {
background: #fff;
z-index: 1000;
position: fixed;
width: 360px;
height: 435px;
overflow: hidden;
opacity: 0;
bottom: 0;
right: 24px;
border-radius: 6px;
-o-border-radius: 6px;
-webkit-border-radius: 6px;
box-shadow: 0 5px 40px rgba(0, 0, 0, .16);
-webkit-box-shadow: 0 5px 40px rgba(0, 0, 0, .16);
-moz-box-shadow: 0 5px 40px rgba(0, 0, 0, .16);
-o-box-shadow: 0 5px 40px rgba(0, 0, 0, .16)
}
.fb-credit {
text-align: center;
margin-top: 8px
}
.fb-credit a {
transition: none;
color: #bec2c9;
font-family: Helvetica, Arial, sans-serif;
font-size: 12px;
text-decoration: none;
border: 0;
font-weight: 400
}
.ctrlq.fb-overlay {
z-index: 0;
position: fixed;
height: 100vh;
width: 100vw;
-webkit-transition: opacity .4s, visibility .4s;
transition: opacity .4s, visibility .4s;
top: 0;
left: 0;
background: rgba(0, 0, 0, .05);
display: none
}
.ctrlq.fb-close {
z-index: 4;
padding: 0 6px;
background: #365899;
font-weight: 700;
font-size: 11px;
color: #fff;
margin: 5px 20px;
border-radius: 3px
}
.ctrlq.fb-close::after {
content: "
X"
;
font-family: sans-serif
}
.bubble {
width: 20px;
height: 20px;
background: #c00;
color: #fff;
position: absolute;
z-index: 999999999;
text-align: center;
vertical-align: middle;
top: -2px;
left: -5px;
border-radius: 50%;
}
.bubble-msg {
width: 120px;
left: -140px;
top: 5px;
position: relative;
background: rgba(59, 89, 152, .8);
color: #fff;
padding: 5px 8px;
border-radius: 8px;
text-align: center;
font-size: 13px;
}
</style>
<div class='fb-livechat'>
<div class='ctrlq fb-overlay' />
<div class='fb-widget'>
<div class='ctrlq fb-close' />
<div class='fb-page' data-height='400' data-hide-cover='true' data-href='https://www.facebook.com/hoachatsapa.vn' data-show-facepile='false' data-small-header='true' data-tabs='messages' data-width='360'> </div>
<div class='fb-credit'> <a href='https://www.niemstyle.com/' target='_blank'>Powered by Niemstyle</a> </div>
<div id='fb-root' />
</div><a class='ctrlq fb-button' href='https://m.me/hoachatsapa.vn' title='Gửi tin nhắn cho chúng tôi qua Facebook'>
<div class='bubble'>1</div>
<div class='bubble-msg'>Bạn cần hỗ trợ?</div>
</a>
</div>
<script src='https://connect.facebook.net/en_US/sdk.js#xfbml=1&version=v2.9' /><script src='https://ajax.googleapis.com/ajax/libs/jquery/2.1.3/jquery.min.js'/><script>$(document).ready(function(){function detectmob(){if( navigator.userAgent.match(/Android/i) || navigator.userAgent.match(/webOS/i) || navigator.userAgent.match(/iPhone/i) || navigator.userAgent.match(/iPad/i) || navigator.userAgent.match(/iPod/i) || navigator.userAgent.match(/BlackBerry/i) || navigator.userAgent.match(/Windows Phone/i) ){return true;}else{return false;}}var t={delay: 125, overlay: $(".fb-overlay"), widget: $(".fb-widget"), button: $(".fb-button")}; setTimeout(function(){$("div.fb-livechat").fadeIn()}, 8 * t.delay); if(!detectmob()){$(".ctrlq").on("click", function(e){e.preventDefault(), t.overlay.is(":visible") ? (t.overlay.fadeOut(t.delay), t.widget.stop().animate({bottom: 0, opacity: 0}, 2 * t.delay, function(){$(this).hide("slow"), t.button.show()})) : t.button.fadeOut("medium", function(){t.widget.stop().show().animate({bottom: "30px", opacity: 1}, 2 * t.delay), t.overlay.fadeIn(t.delay)})})}});</script>
Thay link fanpage mà mình tô đỏ thành tên fanpage các bạn nhé! Chúc các bạn thành công.