<link href="//maxcdn.bootstrapcdn.com/bootstrap/4.1.1/css/bootstrap.min.css" rel="stylesheet" id="bootstrap-css">
<script src="//maxcdn.bootstrapcdn.com/bootstrap/4.1.1/js/bootstrap.min.js"></script>
<script src="//code.jquery.com/jquery-1.11.1.min.js"></script>
<!DOCTYPE html>
<html>
<head>
<title>Chat</title>
<link rel="stylesheet" href="https://stackpath.bootstrapcdn.com/bootstrap/4.1.3/css/bootstrap.min.css" integrity="sha384-MCw98/SFnGE8fJT3GXwEOngsV7Zt27NXFoaoApmYm81iuXoPkFOJwJ8ERdknLPMO" crossorigin="anonymous">
<link rel="stylesheet" href="https://use.fontawesome.com/releases/v5.5.0/css/all.css" integrity="sha384-B4dIYHKNBt8Bc12p+WXckhzcICo0wtJAoU8YZTY5qE0Id1GSseTk6S+L3BlXeVIU" crossorigin="anonymous">
<script src="https://ajax.googleapis.com/ajax/libs/jquery/3.3.1/jquery.min.js"></script>
<link rel="stylesheet" type="text/css" href="https://cdnjs.cloudflare.com/ajax/libs/malihu-custom-scrollbar-plugin/3.1.5/jquery.mCustomScrollbar.min.css">
<script type="text/javascript" src="https://cdnjs.cloudflare.com/ajax/libs/malihu-custom-scrollbar-plugin/3.1.5/jquery.mCustomScrollbar.min.js"></script>
</head>
<body>
<div class="container-fluid h-100">
<div class="row justify-content-center h-100">
<div class="col-md-4 col-xl-3 chat"><div class="card mb-sm-3 mb-md-0 contacts_card">
<div class="card-header">
<div class="input-group">
<input type="text" placeholder="Search..." name="" class="form-control search">
<div class="input-group-prepend">
<span class="input-group-text search_btn"><i class="fas fa-search"></i></span>
</div>
</div>
</div>
<div class="card-body contacts_body">
<ui class="contacts">
<li class="active">
<div class="d-flex bd-highlight">
<div class="img_cont">
<img src="https://static.turbosquid.com/Preview/001292/481/WV/_D.jpg" class="rounded-circle user_img">
<span class="online_icon"></span>
</div>
<div class="user_info">