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CSS

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JavaScript

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Babel includes JSX processing.

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HTML 

              
                
<!doctype html>
                        <html>
                            <head>
                                <meta charset='utf-8'>
                                <meta name='viewport' content='width=device-width, initial-scale=1'>
                                <title>Snippet - GoSnippets</title>
                                <link href='https://stackpath.bootstrapcdn.com/bootstrap/5.0.0-alpha1/css/bootstrap.min.css' rel='stylesheet'>
                                <link href='https://cdnjs.cloudflare.com/ajax/libs/font-awesome/4.7.0/css/font-awesome.min.css' rel='stylesheet'>
                                <style>@import url(https://fonts.googleapis.com/css?family=Roboto:300,400,700&display=swap);

body {
    font-family: "Roboto", sans-serif;
    background: #E6E9ED;
    min-height: 100vh;
    position: relative;
}

.notification-ui a:after {
    display: none;
}

.notification-ui_icon {
    position: relative;
}

.notification-ui_icon .unread-notification {
    display: inline-block;
    height: 7px;
    width: 7px;
    border-radius: 7px;
    background-color: #66BB6A;
    position: absolute;
    top: 7px;
    left: 12px;
}

@media (min-width: 900px) {
    .notification-ui_icon .unread-notification {
        left: 20px;
    }
}

.notification-ui_dd {
    padding: 0;
    border-radius: 10px;
    -webkit-box-shadow: 0 5px 20px -3px rgba(0, 0, 0, 0.16);
    box-shadow: 0 5px 20px -3px rgba(0, 0, 0, 0.16);
    border: 0;
    max-width: 400px;
}

@media (min-width: 900px) {
    .notification-ui_dd {
        min-width: 400px;
        position: absolute;
        left: -192px;
        top: 70px;
    }
}

.notification-ui_dd:after {
    content: "";
    position: absolute;
    top: -30px;
    left: calc(50% - 7px);
    border-top: 15px solid transparent;
    border-right: 15px solid transparent;
    border-bottom: 15px solid #fff;
    border-left: 15px solid transparent;
}

.notification-ui_dd .notification-ui_dd-header {
    border-bottom: 1px solid #ddd;
    padding: 15px;
}

.notification-ui_dd .notification-ui_dd-header h3 {
    margin-bottom: 0;
}

.notification-ui_dd .notification-ui_dd-content {
    max-height: 500px;
    overflow: auto;
}

.notification-list {
    display: -webkit-box;
    display: -ms-flexbox;
    display: flex;
    -webkit-box-pack: justify;
    -ms-flex-pack: justify;
    justify-content: space-between;
    padding: 20px 0;
    margin: 0 25px;
    border-bottom: 1px solid #ddd;
}

.notification-list--unread {
    position: relative;
}

.notification-list--unread:before {
    content: "";
    position: absolute;
    top: 0;
    left: -25px;
    height: calc(100% + 1px);
    border-left: 2px solid #29B6F6;
}

.notification-list .notification-list_img img {
    height: 48px;
    width: 48px;
    border-radius: 50px;
    margin-right: 20px;
}

.notification-list .notification-list_detail p {
    margin-bottom: 5px;
    line-height: 1.2;
}

.notification-list .notification-list_feature-img img {
    height: 48px;
    width: 48px;
    border-radius: 5px;
    margin-left: 20px;
}</style>
                                <script type='text/javascript' src=''></script>
                                <script type='text/javascript' src='https://cdn.jsdelivr.net/npm/popper.js@1.16.0/dist/umd/popper.min.js'></script>
                                <script type='text/javascript' src='https://stackpath.bootstrapcdn.com/bootstrap/5.0.0-alpha1/js/bootstrap.min.js'></script>
                                <script type='text/javascript'></script>
                            </head>
                            <body oncontextmenu='return false' class='snippet-body'>
                            <header>
    <nav class="navbar navbar-expand-lg navbar-light bg-light">
        <div class="container">
            <a class="navbar-brand" href="#">Navbar</a>
            <button class="navbar-toggler" type="button" data-toggle="collapse" data-target="#navbarSupportedContent" aria-controls="navbarSupportedContent" aria-expanded="false" aria-label="Toggle navigation">
                <span class="navbar-toggler-icon"></span>
            </button>
            <div class="collapse navbar-collapse" id="navbarSupportedContent">
                <ul class="navbar-nav ml-auto">
                    <li class="nav-item dropdown notification-ui show">
                        <a class="nav-link dropdown-toggle notification-ui_icon" href="#" id="navbarDropdown" role="button" data-toggle="dropdown" aria-haspopup="true" aria-expanded="false">
                            <i class="fa fa-bell"></i>
                            <span class="unread-notification"></span>
                        </a>
                        <div class="dropdown-menu notification-ui_dd show" aria-labelledby="navbarDropdown">
                            <div class="notification-ui_dd-header">
                                <h3 class="text-center">Notification</h3>
                            </div>
                            <div class="notification-ui_dd-content">
                                <div class="notification-list notification-list--unread">
                                    <div class="notification-list_img">
                                        <img src="https://i.imgur.com/zYxDCQT.jpg" alt="user">
                                    </div>
                                    <div class="notification-list_detail">
                                        <p><b>John Doe</b> reacted to your post</p>
                                        <p><small>10 mins ago</small></p>
                                    </div>
                                    <div class="notification-list_feature-img">
                                        <img src="https://i.imgur.com/AbZqFnR.jpg" alt="Feature image">
                                    </div>
                                </div>
                                <div class="notification-list notification-list--unread">
                                    <div class="notification-list_img">
                                        <img src="https://i.imgur.com/w4Mp4ny.jpg" alt="user">
                                    </div>
                                    <div class="notification-list_detail">
                                        <p><b>Richard Miles</b> reacted to your post</p>
                                        <p><small>1 day ago</small></p>
                                    </div>
                                    <div class="notification-list_feature-img">
                                        <img src="https://i.imgur.com/AbZqFnR.jpg" alt="Feature image">
                                    </div>
                                </div>
                                <div class="notification-list">
                                    <div class="notification-list_img">
                                        <img src="https://i.imgur.com/ltXdE4K.jpg" alt="user">
                                    </div>
                                    <div class="notification-list_detail">
                                        <p><b>Brian Cumin</b> reacted to your post</p>
                                        <p><small>1 day ago</small></p>
                                    </div>
                                    <div class="notification-list_feature-img">
                                        <img src="https://i.imgur.com/bpBpAlH.jpg" alt="Feature image">
                                    </div>
                                </div>
                                <div class="notification-list">
                                    <div class="notification-list_img">
                                        <img src="https://i.imgur.com/CtAQDCP.jpg" alt="user">
                                    </div>
                                    <div class="notification-list_detail">
                                        <p><b>Lance Bogrol</b> reacted to your post</p>
                                        <p><small>1 day ago</small></p>
                                    </div>
                                    <div class="notification-list_feature-img">
                                        <img src="https://i.imgur.com/iIhftMJ.jpg" alt="Feature image">
                                    </div>
                                </div>
                            </div>
                            <div class="notification-ui_dd-footer">
                                <a href="#!" class="btn btn-success btn-block">View All</a>
                            </div>
                        </div>
                    </li>
                    <li class="nav-item">
                        <a class="nav-link" href="#">Home</a>
                    </li>
                    <li class="nav-item">
                        <a class="nav-link" href="#">About</a>
                    </li>
                    <li class="nav-item">
                        <a class="nav-link" href="#">Contact</a>
                    </li>
                    <li class="nav-item">
                        <a class="nav-link" href="#">Login</a>
                    </li>
                    <li class="nav-item">
                        <a class="nav-link" href="#">Signup</a>
                    </li>
                </ul>
            </div>
        </div>
    </nav>
</header>
                              <a target="_blank" href="https://gosnippets.com" class="white-mode">MORE</a>
                            </body>
                        </html>
!

CSS 

              
                .white-mode {
    text-decoration: none;
    padding: 17px 40px;
    background-color: yellow;
    border-radius: 3px;
    color: black;
    transition: .35s ease-in-out;
    position: fixed;
    left: 15px;
    bottom: 15px
}
!

JS
!
999px

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