Bootstrap snippet and html example. animated chat window

Bootstrap 3.3.7 snippet "animated chat window" with HTML, CSS, and JS. Copy, paste, and customize this responsive UI component for your project.
Tags: chat,messages

HTML code

Clean, semantic HTML that powers this Bootstrap 3.3.7 snippet. Copy and paste it into your page (with Bootstrap loaded) to reproduce the exact layout shown in the preview.

<div class="chat_window">
    <div class="top_menu">
        <div class="buttons">
            <div class="button close"></div>
            <div class="button minimize"></div>
            <div class="button maximize"></div>
        </div>
        <div class="title">Chat</div>
    </div>
    <ul class="messages"></ul>
    <div class="bottom_wrapper clearfix">
        <div class="message_input_wrapper">
            <input class="message_input" placeholder="Type your message here..." />
        </div>
        <div class="send_message">
            <div class="icon"></div>
            <div class="text">Send</div>
        </div>
    </div>
</div>
<div class="message_template">
    <li class="message">
        <div class="avatar"></div>
        <div class="text_wrapper">
            <div class="text"></div>
        </div>
    </li>
</div>

CSS code

Scoped CSS that styles the component. Paste it after Bootstrap 3.3.7 to keep the design, spacing, and responsiveness consistent.

* {
  box-sizing: border-box;
}

body {
  background-color: #edeff2;
  font-family: "Calibri", "Roboto", sans-serif;
}

.chat_window {
  position: absolute;
  width: calc(100% - 20px);
  max-width: 800px;
  height: 500px;
  border-radius: 10px;
  background-color: #fff;
  left: 50%;
  top: 50%;
  transform: translateX(-50%) translateY(-50%);
  box-shadow: 0 10px 20px rgba(0, 0, 0, 0.15);
  background-color: #f8f8f8;
  overflow: hidden;
}

.top_menu {
  background-color: #fff;
  width: 100%;
  padding: 20px 0 15px;
  box-shadow: 0 1px 30px rgba(0, 0, 0, 0.1);
}
.top_menu .buttons {
  margin: 3px 0 0 20px;
  position: absolute;
}
.top_menu .buttons .button {
  width: 16px;
  height: 16px;
  border-radius: 50%;
  display: inline-block;
  margin-right: 10px;
  position: relative;
}
.top_menu .buttons .button.close {
  background-color: #f5886e;
}
.top_menu .buttons .button.minimize {
  background-color: #fdbf68;
}
.top_menu .buttons .button.maximize {
  background-color: #a3d063;
}
.top_menu .title {
  text-align: center;
  color: #bcbdc0;
  font-size: 20px;
}

.messages {
  position: relative;
  list-style: none;
  padding: 20px 10px 0 10px;
  margin: 0;
  height: 347px;
  overflow: scroll;
}
.messages .message {
  clear: both;
  overflow: hidden;
  margin-bottom: 20px;
  transition: all 0.5s linear;
  opacity: 0;
}
.messages .message.left .avatar {
  background-color: #f5886e;
  float: left;
}
.messages .message.left .text_wrapper {
  background-color: #ffe6cb;
  margin-left: 20px;
}
.messages .message.left .text_wrapper::after, .messages .message.left .text_wrapper::before {
  right: 100%;
  border-right-color: #ffe6cb;
}
.messages .message.left .text {
  color: #c48843;
}
.messages .message.right .avatar {
  background-color: #fdbf68;
  float: right;
}
.messages .message.right .text_wrapper {
  background-color: #c7eafc;
  margin-right: 20px;
  float: right;
}
.messages .message.right .text_wrapper::after, .messages .message.right .text_wrapper::before {
  left: 100%;
  border-left-color: #c7eafc;
}
.messages .message.right .text {
  color: #45829b;
}
.messages .message.appeared {
  opacity: 1;
}
.messages .message .avatar {
  width: 60px;
  height: 60px;
  border-radius: 50%;
  display: inline-block;
}
.messages .message .text_wrapper {
  display: inline-block;
  padding: 20px;
  border-radius: 6px;
  width: calc(100% - 85px);
  min-width: 100px;
  position: relative;
}
.messages .message .text_wrapper::after, .messages .message .text_wrapper:before {
  top: 18px;
  border: solid transparent;
  content: " ";
  height: 0;
  width: 0;
  position: absolute;
  pointer-events: none;
}
.messages .message .text_wrapper::after {
  border-width: 13px;
  margin-top: 0px;
}
.messages .message .text_wrapper::before {
  border-width: 15px;
  margin-top: -2px;
}
.messages .message .text_wrapper .text {
  font-size: 18px;
  font-weight: 300;
}

.bottom_wrapper {
  position: relative;
  width: 100%;
  background-color: #fff;
  padding: 20px 20px;
  position: absolute;
  bottom: 0;
}
.bottom_wrapper .message_input_wrapper {
  display: inline-block;
  height: 50px;
  border-radius: 25px;
  border: 1px solid #bcbdc0;
  width: calc(100% - 160px);
  position: relative;
  padding: 0 20px;
}
.bottom_wrapper .message_input_wrapper .message_input {
  border: none;
  height: 100%;
  box-sizing: border-box;
  width: calc(100% - 40px);
  position: absolute;
  outline-width: 0;
  color: gray;
}
.bottom_wrapper .send_message {
  width: 140px;
  height: 50px;
  display: inline-block;
  border-radius: 50px;
  background-color: #a3d063;
  border: 2px solid #a3d063;
  color: #fff;
  cursor: pointer;
  transition: all 0.2s linear;
  text-align: center;
  float: right;
}
.bottom_wrapper .send_message:hover {
  color: #a3d063;
  background-color: #fff;
}
.bottom_wrapper .send_message .text {
  font-size: 18px;
  font-weight: 300;
  display: inline-block;
  line-height: 48px;
}

.message_template {
  display: none;
}

Javascript/Jquery code

Lightweight JS to power any interactions this snippet needs. Drop it under your scripts (after Bootstrap 3.3.7) to mirror the live demo.

(function () {
    var Message;
    Message = function (arg) {
        this.text = arg.text, this.message_side = arg.message_side;
        this.draw = function (_this) {
            return function () {
                var $message;
                $message = $($('.message_template').clone().html());
                $message.addClass(_this.message_side).find('.text').html(_this.text);
                $('.messages').append($message);
                return setTimeout(function () {
                    return $message.addClass('appeared');
                }, 0);
            };
        }(this);
        return this;
    };
    $(function () {
        var getMessageText, message_side, sendMessage;
        message_side = 'right';
        getMessageText = function () {
            var $message_input;
            $message_input = $('.message_input');
            return $message_input.val();
        };
        sendMessage = function (text) {
            var $messages, message;
            if (text.trim() === '') {
                return;
            }
            $('.message_input').val('');
            $messages = $('.messages');
            message_side = message_side === 'left' ? 'right' : 'left';
            message = new Message({
                text: text,
                message_side: message_side
            });
            message.draw();
            return $messages.animate({ scrollTop: $messages.prop('scrollHeight') }, 300);
        };
        $('.send_message').click(function (e) {
            return sendMessage(getMessageText());
        });
        $('.message_input').keyup(function (e) {
            if (e.which === 13) {
                return sendMessage(getMessageText());
            }
        });
        sendMessage('Hello Philip! :)');
        setTimeout(function () {
            return sendMessage('Hi Sandy! How are you?');
        }, 1000);
        return setTimeout(function () {
            return sendMessage('I\'m fine, thank you!');
        }, 2000);
    });
}.call(this)); 

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FAQ

How do I use this snippet?

Include Bootstrap 3.3.7, paste the HTML, add the CSS block, and include the JS (if any) to mirror the live preview.

Can I use it in commercial projects?

Yes. It’s free for personal and commercial work; check the snippets license for details.

Is it responsive?

Yes. It inherits the responsive grid and components from Bootstrap 3.3.7.

Bootstrap example and template. animated chat window

About this bootstrap example/template

Optimized for copy‑paste: clean HTML, scoped CSS, and minimal JS so you can ship production‑ready UI faster and keep designs consistent.

Mobile‑first and responsive by default. Tested across modern browsers to reduce polish time on your project.

Already trusted in 32.5K+ views. Reuse this snippet to speed up landing pages, dashboards, or onboarding flows.

Bootstrap 3.3.7

<link rel='stylesheet' href='https://netdna.bootstrapcdn.com/bootstrap/3.3.7/css/bootstrap.min.css'>

<script src='https://netdna.bootstrapcdn.com/bootstrap/3.3.7/js/bootstrap.min.js'></script>

This code example is based on bootstrap 3.3.7 and the grid system of this framework

Responsive

Based on bootstrap framework makes all the layouts perfectly responsive for all devices

Crossbrowser compatibility

Tested on all major browsers, it works smoothly on all of them

Jquery plugins

Great built-in plugins with jquery framework, you can easy to change all declarations

semantic html 5

Built on html / css3 the code quality is really amazing

Simple Integration

This code example can be simply integrated on existing sites and new ones too, all you need to do is copy the code and start working