index.html
<!doctype html>
<html lang="eng">
<head>
<meta charset="UTF-8" />
<meta name="viewport" content="width=device-width, initial-scale=1.0" />
<meta http-equiv="X-UA-Compatible" content="ie=edge" />
<title>RSS Timeline</title>
</head>
<body>
<div class="modal fade" id="modal-window" tabindex="-1" role="dialog" aria-hidden="true">
<div class="modal-dialog" role="document">
<div class="modal-content">
<div class="modal-header">
<h4 class="modal-title" id="feed-modal-title"></h4>
</div>
<div class="modal-body" id="feed-modal-body">
</div>
<div class="modal-footer" id="feed-modal-footer">
<button class="btn btn-secondary" data-dismiss="modal">Close</button>
</div>
</div>
</div>
</div>
<div class="container">
<div class="jumbotron">
<form class="form-group" id="source-form">
<h4>Enter your source to generate news feed:</h4>
<label class="w-100">
<input class="form-control border is-invalid" type="text" id="input-url" placeholder="Source">
</label>
<small class="text-muted form-text">For example: http://lorem-rss.herokuapp.com/feed</small>
<!--<small class="text-muted form-text">https://3dnews.ru/news/rss/</small>-->
<button class="btn btn-primary mt-3" disabled id="button-submit" type="submit">Subscribe</button>
</form>
</div>
<div id="loading-container" class="d-none"></div>
<div class="row">
<div id="list-rss-flow" class="col-md-5">
<div class="card">
<div class="card-header">Subscriptions</div>
<div class="card-body" id="feed-subscriptions"></div>
</div>
</div>
<div class="col-md-10 mt-5">
<div class="row" id="rss-flow"></div>
</div>
</div>
</div>
</body>
</html>