<!DOCTYPE html>
<html lang="en">
<head>
  <meta charset="UTF-8">
  <meta http-equiv="X-UA-Compatible" content="IE=edge">
  <meta name="viewport" content="width=device-width, initial-scale=1.0">
  <title>Document</title>
  <link rel="stylesheet" href="https://cdn.jsdelivr.net/npm/bootstrap@5.2.2/dist/css/bootstrap.min.css">
  <link href="https://maxcdn.bootstrapcdn.com/font-awesome/4.3.0/css/font-awesome.min.css" rel="stylesheet">
<script src="https://cdn.jsdelivr.net/npm/bootstrap@5.2.2/dist/js/bootstrap.min.js"></script>
 <script 
src="https://cdnjs.cloudflare.com/ajax/libs/jquery.nicescroll/3.6.8-fix/jquery.nicescroll.min.js"></script>
  
</head>
<body>
  
<div class="container">
<div class="content container-fluid bootstrap snippets bootdey">
      <div class="row row-broken">
        <div class="col-sm-3 col-xs-12">
          <div class="col-inside-lg decor-default chat" style="overflow: hidden; outline: none;" tabindex="5000">
            <div class="chat-users">
              <h6>Online</h6>
                <div class="user">
                    <div class="avatar">
                    <img src="https://bootdey.com/img/Content/avatar/avatar1.png" alt="User name">
                    <div class="status off"></div>
                    </div>
                    <div class="name">User name</div>
                    <div class="mood">User mood</div>
                </div>
                <div class="user">
                    <div class="avatar">
                    <img src="https://bootdey.com/img/Content/avatar/avatar2.png" alt="User name">
                    <div class="status online"></div>
                    </div>
                    <div class="name">User name</div>
                    <div class="mood">User mood</div>
                </div>
                <div class="user">
                    <div class="avatar">
                    <img src="https://bootdey.com/img/Content/avatar/avatar3.png" alt="User name">
                    <div class="status busy"></div>
                    </div>
                    <div class="name">User name</div>
                    <div class="mood">User mood</div>
                </div>
                <div class="user">
                    <div class="avatar">
                    <img src="https://bootdey.com/img/Content/avatar/avatar4.png" alt="User name">
                    <div class="status offline"></div>
                    </div>
                    <div class="name">User name</div>
                    <div class="mood">User mood</div>
                </div>
                <div class="user">
                    <div class="avatar">
                    <img src="https://bootdey.com/img/Content/avatar/avatar5.png" alt="User name">
                    <div class="status off"></div>
                    </div>
                    <div class="name">User name</div>
                    <div class="mood">User mood</div>
                </div>
                <div class="user">
                    <div class="avatar">
                    <img src="https://bootdey.com/img/Content/avatar/avatar6.png" alt="User name">
                    <div class="status online"></div>
                    </div>
                    <div class="name">User name</div>
                    <div class="mood">User mood</div>
                </div>
                <div class="user">
                    <div class="avatar">
                    <img src="https://bootdey.com/img/Content/avatar/avatar1.png" alt="User name">
                    <div class="status busy"></div>
                    </div>
                    <div class="name">User name</div>
                    <div class="mood">User mood</div>
                </div>
                <div class="user">
                    <div class="avatar">
                    <img src="https://bootdey.com/img/Content/avatar/avatar2.png" alt="User name">
                    <div class="status offline"></div>
                    </div>
                    <div class="name">User name</div>
                    <div class="mood">User mood</div>
                </div>
                <div class="user">
                    <div class="avatar">
                    <img src="https://bootdey.com/img/Content/avatar/avatar3.png" alt="User name">
                    <div class="status off"></div>
                    </div>
                    <div class="name">User name</div>
                    <div class="mood">User mood</div>
                </div>
                <div class="user">
                    <div class="avatar">
                    <img src="https://bootdey.com/img/Content/avatar/avatar4.png" alt="User name">
                    <div class="status online"></div>
                    </div>
                    <div class="name">User name</div>
                    <div class="mood">User mood</div>
                </div>
                <div class="user">
                    <div class="avatar">
                    <img src="https://bootdey.com/img/Content/avatar/avatar5.png" alt="User name">
                    <div class="status busy"></div>
                    </div>
                    <div class="name">User name</div>
                    <div class="mood">User mood</div>
                </div>
                <div class="user">
                    <div class="avatar">
                    <img src="https://bootdey.com/img/Content/avatar/avatar6.png" alt="User name">
                    <div class="status offline"></div>
                    </div>
                    <div class="name">User name</div>
                    <div class="mood">User mood</div>
                </div>
                <div class="user">
                    <div class="avatar">
                    <img src="https://bootdey.com/img/Content/avatar/avatar7.png" alt="User name">
                    <div class="status off"></div>
                    </div>
                    <div class="name">User name</div>
                    <div class="mood">User mood</div>
                </div>
                <div class="user">
                    <div class="avatar">
                    <img src="https://bootdey.com/img/Content/avatar/avatar1.png" alt="User name">
                    <div class="status off"></div>
                    </div>
                    <div class="name">User name</div>
                    <div class="mood">User mood</div>
                </div>
                <div class="user">
                    <div class="avatar">
                    <img src="https://bootdey.com/img/Content/avatar/avatar2.png" alt="User name">
                    <div class="status online"></div>
                    </div>
                    <div class="name">User name</div>
                    <div class="mood">User mood</div>
                </div>
                <div class="user">
                    <div class="avatar">
                    <img src="https://bootdey.com/img/Content/avatar/avatar3.png" alt="User name">
                    <div class="status busy"></div>
                    </div>
                    <div class="name">User name</div>
                    <div class="mood">User mood</div>
                </div>
                <div class="user">
                    <div class="avatar">
                    <img src="https://bootdey.com/img/Content/avatar/avatar4.png" alt="User name">
                    <div class="status offline"></div>
                    </div>
                    <div class="name">User name</div>
                    <div class="mood">User mood</div>
                </div>
                <div class="user">
                    <div class="avatar">
                    <img src="https://bootdey.com/img/Content/avatar/avatar5.png" alt="User name">
                    <div class="status off"></div>
                    </div>
                    <div class="name">User name</div>
                    <div class="mood">User mood</div>
                </div>
                <div class="user">
                    <div class="avatar">
                    <img src="https://bootdey.com/img/Content/avatar/avatar6.png" alt="User name">
                    <div class="status online"></div>
                    </div>
                    <div class="name">User name</div>
                    <div class="mood">User mood</div>
                </div>
                <div class="user">
                    <div class="avatar">
                    <img src="https://bootdey.com/img/Content/avatar/avatar7.png" alt="User name">
                    <div class="status busy"></div>
                    </div>
                    <div class="name">User name</div>
                    <div class="mood">User mood</div>
                </div>
                <div class="user">
                    <div class="avatar">
                    <img src="https://bootdey.com/img/Content/avatar/avatar1.png" alt="User name">
                    <div class="status offline"></div>
                    </div>
                    <div class="name">User name</div>
                    <div class="mood">User mood</div>
                </div>
                <div class="user">
                    <div class="avatar">
                    <img src="https://bootdey.com/img/Content/avatar/avatar2.png" alt="User name">
                    <div class="status off"></div>
                    </div>
                    <div class="name">User name</div>
                    <div class="mood">User mood</div>
                </div>
                <div class="user">
                    <div class="avatar">
                    <img src="https://bootdey.com/img/Content/avatar/avatar3.png" alt="User name">
                    <div class="status online"></div>
                    </div>
                    <div class="name">User name</div>
                    <div class="mood">User mood</div>
                </div>
                <div class="user">
                    <div class="avatar">
                    <img src="https://bootdey.com/img/Content/avatar/avatar4.png" alt="User name">
                    <div class="status busy"></div>
                    </div>
                    <div class="name">User name</div>
                    <div class="mood">User mood</div>
                </div>
                <div class="user">
                    <div class="avatar">
                    <img src="https://bootdey.com/img/Content/avatar/avatar5.png" alt="User name">
                    <div class="status offline"></div>
                    </div>
                    <div class="name">User name</div>
                    <div class="mood">User mood</div>
                </div>
                <div class="user">
                    <div class="avatar">
                    <img src="https://bootdey.com/img/Content/avatar/avatar6.png" alt="User name">
                    <div class="status off"></div>
                    </div>
                    <div class="name">User name</div>
                    <div class="mood">User mood</div>
                </div>
            </div>
          </div>
        </div>
        <div class="col-sm-9 col-xs-12 chat" style="overflow: hidden; outline: none;" tabindex="5001">
          <div class="col-inside-lg decor-default">
            <div class="chat-body">
              <h6>Mini Chat</h6>
              <div class="answer left">
                <div class="avatar">
                  <img src="https://bootdey.com/img/Content/avatar/avatar1.png" alt="User name">
                  <div class="status offline"></div>
                </div>
                <div class="name">Alexander Herthic</div>
                <div class="text">
                  Lorem ipsum dolor amet, consectetur adipisicing elit Lorem ipsum dolor amet, consectetur adipisicing elit Lorem ipsum dolor amet, consectetur adiping elit
                </div>
                <div class="time">5 min ago</div>
              </div>
              <div class="answer right">
                <div class="avatar">
                  <img src="https://bootdey.com/img/Content/avatar/avatar2.png" alt="User name">
                  <div class="status offline"></div>
                </div>
                <div class="name">Alexander Herthic</div>
                <div class="text">
                  Lorem ipsum dolor amet, consectetur adipisicing elit Lorem ipsum dolor amet, consectetur adipisicing elit Lorem ipsum dolor amet, consectetur adiping elit
                </div>
                <div class="time">5 min ago</div>
              </div>
              <div class="answer left">
                <div class="avatar">
                  <img src="https://bootdey.com/img/Content/avatar/avatar1.png" alt="User name">
                  <div class="status online"></div>
                </div>
                <div class="name">Alexander Herthic</div>
                <div class="text">
                  ...
                </div>
                <div class="time">5 min ago</div>
              </div>
              <div class="answer right">
                <div class="avatar">
                  <img src="https://bootdey.com/img/Content/avatar/avatar2.png" alt="User name">
                  <div class="status busy"></div>
                </div>
                <div class="name">Alexander Herthic</div>
                <div class="text">
                  It is a long established fact that a reader will be. Thanks Mate!
                </div>
                <div class="time">5 min ago</div>
              </div>
              <div class="answer right">
                <div class="avatar">
                  <img src="https://bootdey.com/img/Content/avatar/avatar1.png" alt="User name">
                  <div class="status off"></div>
                </div>
                <div class="name">Alexander Herthic</div>
                <div class="text">
                  It is a long established fact that a reader will be. Thanks Mate!
                </div>
                <div class="time">5 min ago</div>
              </div>
              <div class="answer left">
                <div class="avatar">
                  <img src="https://bootdey.com/img/Content/avatar/avatar2.png" alt="User name">
                  <div class="status offline"></div>
                </div>
                <div class="name">Alexander Herthic</div>
                <div class="text">
                  Lorem ipsum dolor amet, consectetur adipisicing elit Lorem ipsum dolor amet, consectetur adipisicing elit Lorem ipsum dolor amet, consectetur adiping elit
                </div>
                <div class="time">5 min ago</div>
              </div>
              <div class="answer right">
                <div class="avatar">
                  <img src="https://bootdey.com/img/Content/avatar/avatar1.png" alt="User name">
                  <div class="status offline"></div>
                </div>
                <div class="name">Alexander Herthic</div>
                <div class="text">
                  Lorem ipsum dolor amet, consectetur adipisicing elit Lorem ipsum dolor amet, consectetur adipisicing elit Lorem ipsum dolor amet, consectetur adiping elit
                </div>
                <div class="time">5 min ago</div>
              </div>
              <div class="answer left">
                <div class="avatar">
                  <img src="https://bootdey.com/img/Content/avatar/avatar2.png" alt="User name">
                  <div class="status online"></div>
                </div>
                <div class="name">Alexander Herthic</div>
                <div class="text">
                  ...
                </div>
                <div class="time">5 min ago</div>
              </div>
              <div class="answer right">
                <div class="avatar">
                  <img src="https://bootdey.com/img/Content/avatar/avatar1.png" alt="User name">
                  <div class="status busy"></div>
                </div>
                <div class="name">Alexander Herthic</div>
                <div class="text">
                  It is a long established fact that a reader will be. Thanks Mate!
                </div>
                <div class="time">5 min ago</div>
              </div>
              <div class="answer right">
                <div class="avatar">
                  <img src="https://bootdey.com/img/Content/avatar/avatar2.png" alt="User name">
                  <div class="status off"></div>
                </div>
                <div class="name">Alexander Herthic</div>
                <div class="text">
                  It is a long established fact that a reader will be. Thanks Mate!
                </div>
                <div class="time">5 min ago</div>
              </div>
              <div class="answer-add">
                <input placeholder="Write a message">
                <span class="answer-btn answer-btn-1"></span>
                <span class="answer-btn answer-btn-2"></span>
              </div>
            </div>
          </div>
        </div>
      </div>
    </div>
 </div>
</body>
</html>
body{
    margin-top:20px;
    background:#eee;
}
.row.row-broken {
    padding-bottom: 0;
}
.col-inside-lg {
    padding: 20px;
}
.chat {
    height: calc(100vh - 180px);
}
.decor-default {
    background-color: #ffffff;
}
.chat-users h6 {
    font-size: 20px;
    margin: 0 0 20px;
}
.chat-users .user {
    position: relative;
    padding: 0 0 0 50px;
    display: block;
    cursor: pointer;
    margin: 0 0 20px;
}
.chat-users .user .avatar {
    top: 0;
    left: 0;
}
.chat .avatar {
    width: 40px;
    height: 40px;
    position: absolute;
}
.chat .avatar img {
    display: block;
    border-radius: 20px;
    height: 100%;
}
.chat .avatar .status.off {
    border: 1px solid #5a5a5a;
    background: #ffffff;
}
.chat .avatar .status.online {
    background: #4caf50;
}
.chat .avatar .status.busy {
    background: #ffc107;
}
.chat .avatar .status.offline {
    background: #ed4e6e;
}
.chat-users .user .status {
    bottom: 0;
    left: 28px;
}
.chat .avatar .status {
    width: 10px;
    height: 10px;
    border-radius: 5px;
    position: absolute;
}
.chat-users .user .name {
    font-size: 14px;
    font-weight: bold;
    line-height: 20px;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}
.chat-users .user .mood {
    font: 200 14px/20px "Raleway", sans-serif;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

/*****************CHAT BODY *******************/
.chat-body h6 {
    font-size: 20px;
    margin: 0 0 20px;
}
.chat-body .answer.left {
    padding: 0 0 0 58px;
    text-align: left;
    float: left;
}
.chat-body .answer {
    position: relative;
    max-width: 600px;
    overflow: hidden;
    clear: both;
}
.chat-body .answer.left .avatar {
    left: 0;
}
.chat-body .answer .avatar {
    bottom: 36px;
}
.chat .avatar {
    width: 40px;
    height: 40px;
    position: absolute;
}
.chat .avatar img {
    display: block;
    border-radius: 20px;
    height: 100%;
}
.chat-body .answer .name {
    font-size: 14px;
    line-height: 36px;
}
.chat-body .answer.left .avatar .status {
    right: 4px;
}
.chat-body .answer .avatar .status {
    bottom: 0;
}
.chat-body .answer.left .text {
    background: #ebebeb;
    color: #333333;
    border-radius: 8px 8px 8px 0;
}
.chat-body .answer .text {
    padding: 12px;
    font-size: 16px;
    line-height: 26px;
    position: relative;
}
.chat-body .answer.left .text:before {
    left: -30px;
    border-right-color: #ebebeb;
    border-right-width: 12px;
}
.chat-body .answer .text:before {
    content: '';
    display: block;
    position: absolute;
    bottom: 0;
    border: 18px solid transparent;
    border-bottom-width: 0;
}
.chat-body .answer.left .time {
    padding-left: 12px;
    color: #333333;
}
.chat-body .answer .time {
    font-size: 16px;
    line-height: 36px;
    position: relative;
    padding-bottom: 1px;
}
/*RIGHT*/
.chat-body .answer.right {
    padding: 0 58px 0 0;
    text-align: right;
    float: right;
}

.chat-body .answer.right .avatar {
    right: 0;
}
.chat-body .answer.right .avatar .status {
    left: 4px;
}
.chat-body .answer.right .text {
    background: #7266ba;
    color: #ffffff;
    border-radius: 8px 8px 0 8px;
}
.chat-body .answer.right .text:before {
    right: -30px;
    border-left-color: #7266ba;
    border-left-width: 12px;
}
.chat-body .answer.right .time {
    padding-right: 12px;
    color: #333333;
}

/**************ADD FORM ***************/
.chat-body .answer-add {
    clear: both;
    position: relative;
    margin: 20px -20px -20px;
    padding: 20px;
    background: #46be8a;
}
.chat-body .answer-add input {
    border: none;
    background: none;
    display: block;
    width: 100%;
    font-size: 16px;
    line-height: 20px;
    padding: 0;
    color: #ffffff;
}
.chat input {
    -webkit-appearance: none;
    border-radius: 0;
}
.chat-body .answer-add .answer-btn-1 {
    background: url("http://91.234.35.26/iwiki-admin/v1.0.0/admin/img/icon-40.png") 50% 50% no-repeat;
    right: 56px;
}
.chat-body .answer-add .answer-btn {
    display: block;
    cursor: pointer;
    width: 36px;
    height: 36px;
    position: absolute;
    top: 50%;
    margin-top: -18px;
}
.chat-body .answer-add .answer-btn-2 {
    background: url("http://91.234.35.26/iwiki-admin/v1.0.0/admin/img/icon-41.png") 50% 50% no-repeat;
    right: 20px;
}
.chat input::-webkit-input-placeholder {
   color: #fff;
}

.chat input:-moz-placeholder { /* Firefox 18- */
   color: #fff;  
}

.chat input::-moz-placeholder {  /* Firefox 19+ */
   color: #fff;  
}

.chat input:-ms-input-placeholder {  
   color: #fff;  
}
.chat input {
    -webkit-appearance: none;
    border-radius: 0;
}
$(function(){
    $(".chat").niceScroll();
})

External CSS

This Pen doesn't use any external CSS resources.

External JavaScript

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