<style type="text/css">#chat-head { 

background: #fff url('https://nguoinghe.vn/zoom/156x0/uploads/images/trunganhdung/2022/09/12/kg-1662994624.jpg') no-repeat -3px -5px;

background-size: 80px 80px;

width: 70px;

height: 70px;

-webkit-border-radius: 55px;

-moz-border-radius: 55px;

border-radius: 55px;

background-color: #adafb5;

-webkit-box-shadow: 0 2px 12px 1px rgba(0,0,0,.89);

-moz-box-shadow: 0 2px 12px 1px rgba(0,0,0,.89);

box-shadow: 0 2px 12px 1px rgba(0,0,0,.89);

border: solid 1px #fff;

position: fixed;

right: -110px;

top: 60px;

text-decoration: none;

-webkit-transition: all .3s ease-in-out; -moz-transition: all .3s ease-in-out; -o-transition: all .3s ease-in-out; -ms-transition: all .3s ease-in-out;

opacity: 0;

transition: 5s;

}

#chat-head i { 

width: 17px;

height: 24px;

-webkit-border-radius: 4px/3px;

-moz-border-radius: 4px/3px;

border-radius: 4px/3px;

background-color: #adafb5;

background-image: -webkit-linear-gradient(bottom, #ff1919, #ff5959);

background-image: -moz-linear-gradient(bottom, #ff1919, #ff5959);

background-image: -o-linear-gradient(bottom, #ff1919, #ff5959);

background-image: -ms-linear-gradient(bottom, #ff1919, #ff5959);

background-image: linear-gradient(to top, #ff1919, #ff5959);

display: block;

color: #fff;

font-style: normal;

font-family: 'Helvetica';

font-weight: bold;

font-size: 16px;

text-align: center;

line-height: 28px;

box-shadow: 0px 1px 3px #000;

-moz-box-shadow: 0px 1px 3px #000;

-webkit-box-shadow: 0px 1px 3px #000;

border: 1px solid rgba(255, 0, 0, .5);

margin: -5px 0 0 -5px;

text-shadow: 0 2px 0 #c51414;

}

#chat-head.animate { right: -10px;opacity: 1 }

</style>

<a id="chat-head" href="#">

  <i>1</i>

</a>



<audio id="pingpong" autoplay>

  <source src="http://nhacchuongvui.com/wp-content/uploads/Nhac-chuong-tin-nhan-Messenger-www_nhacchuongvui_com.mp3?_=1" type="audio/mpeg">

</audio>

<script>

  var element = document.getElementById("chat-head");

  var pingpong = document.getElementById("pingpong");

  element.classList.add("animate");

  pingpong.play();

  dragElement(document.getElementById(("chat-head")));

function dragElement(elmnt) {

  var pos1 = 0, pos2 = 0, pos3 = 0, pos4 = 0;

  if (document.getElementById(elmnt.id + "header")) {

    document.getElementById(elmnt.id + "header").onmousedown = dragMouseDown;

  } else {

    elmnt.onmousedown = dragMouseDown;

  }

  function dragMouseDown(e) {

    e = e || window.event;

    pos3 = e.clientX;

    pos4 = e.clientY;

    document.onmouseup = closeDragElement;

    document.onmousemove = elementDrag;

  }

  function elementDrag(e) {

    e = e || window.event;

    pos1 = pos3 - e.clientX;

    pos2 = pos4 - e.clientY;

    pos3 = e.clientX;

    pos4 = e.clientY;

    elmnt.style.top = (elmnt.offsetTop - pos2) + "px";

    elmnt.style.left = (elmnt.offsetLeft - pos1) + "px";

  }

  function closeDragElement() {

    document.onmouseup = null;

    document.onmousemove = null;

  }

}

</script>