Anonymous Pens can't be embedded.
Edit on CodePen
{"__browser":{"device":"unknown_device","mobile":false,"name":"unknown browser","platform":"unknown_platform","version":"0"},"__constants":{},"__CPDATA":{"domain_iframe":"https://cdpn.io","environment":"production","host":"codepen.io","iframe_allow":"accelerometer; ambient-light-sensor; camera; display-capture; encrypted-media; geolocation; gyroscope; microphone; midi; payment; web-share; vr","iframe_sandbox":"allow-forms allow-modals allow-pointer-lock allow-popups allow-same-origin allow-scripts allow-top-navigation-by-user-activation allow-downloads allow-presentation"},"__cpedata":{"action":"show_preview","controller":"embed"},"__graphql":{"data":null,"errors":[{"message":"Cannot return null for non-nullable field Query.sessionUser"}]},"__pay_stripe_public_key":"pk_live_2GndomDfiklqpSNQn8FrGuwZSMIMzha7DkLJqlYe7IR0ihKAlKdiHg68JJc5eVPt68rzAjzAAVXcUwjySHRCsgjQQ00gtRBUFNH","__pay_braintree_env":"production","__boomboom":{"serve_url":"https://cdpn.io/cpe/boomboom","store_url":"https://codepen.io/cpe/boomboom/store"},"__pageType":"embed","__item":"{\"editor_settings\":{\"auto_run\":true,\"auto_save\":true,\"format_on_save\":false,\"indent_with\":\"spaces\",\"tab_size\":\"2\",\"id\":\"VoDkNZ\",\"autocomplete\":false,\"code_folding\":true,\"css_pre_processor\":\"none\",\"css_prefix\":\"neither\",\"css_starter\":\"neither\",\"emmet_active\":true,\"font_size\":\"14\",\"font_type\":\"system\",\"html_pre_processor\":\"none\",\"js_pre_processor\":\"none\",\"key_bindings\":\"normal\",\"line_numbers\":true,\"line_wrapping\":true,\"match_brackets\":true,\"snippets\":{\"markupSnippets\":{},\"stylesheetSnippets\":{}},\"theme\":\"twilight\"},\"hashid\":\"vEQeVa\",\"itemType\":\"pen\",\"resources\":[],\"tags\":[],\"id\":3287416,\"user_id\":1,\"html\":\"<html ng-app=\\\"ionicApp\\\">\\n <head>\\n <meta charset=\\\"utf-8\\\">\\n <meta name=\\\"viewport\\\" content=\\\"initial-scale=1, maximum-scale=1, user-scalable=no, width=device-width\\\">\\n <title>Simple List</title>\\n\\n <link href=\\\"https://code.ionicframework.com/nightly/css/ionic.min.css\\\" rel=\\\"stylesheet\\\">\\n <script src=\\\"https://code.ionicframework.com/nightly/js/ionic.bundle.min.js\\\"></script>\\n </head>\\n\\n <body ng-controller=\\\"MyCtrl\\\">\\n\\n <ion-header-bar class=\\\"bar-positive\\\">\\n <h1 class=\\\"title\\\">Card Sample Music</h1>\\n </ion-header-bar>\\n\\n <ion-content>\\n\\n <div class=\\\"list\\\">\\n <div class=\\\"card\\\">\\n <div class=\\\"item item-divider color-header\\\">\\n </div>\\n <div class=\\\"item item-text-wrap\\\">\\n This is a basic Card with some text.\\n </div>\\n <div class=\\\"item item-divider\\\">\\n I'm a Footer in a Card!\\n </div>\\n </div>\\n \\n <div class=\\\"card\\\">\\n <div class=\\\"item item-divider color-header\\\">\\n </div>\\n <div class=\\\"item item-text-wrap\\\">\\n This is a basic Card with some text.\\n </div>\\n <div class=\\\"item item-divider\\\">\\n I'm a Footer in a Card!\\n </div>\\n </div>\\n </div>\\n\\n\\n\\n\\n </ion-content>\\n\\n </body>\\n</html>\",\"css\":\".color-header {\\n padding-top: 0px !important;\\n padding-bottom: 0px !important;\\n min-height: 7px !important;\\n color: #222;\\n}\\n\\n.item.item-divider:first-child {\\n background-color: rgba(25, 255, 255, 0.74);\\n}\\n\\n.item {\\n border-top: none !important;\\n}\",\"parent\":1734922,\"js\":\"angular.module('ionicApp', ['ionic'])\\n\\n.controller('MyCtrl', function($scope) {\\n // don't be scared by the image value, its just datauri\\n})\",\"html_pre_processor\":\"none\",\"css_pre_processor\":\"none\",\"js_pre_processor\":\"none\",\"html_classes\":\"\",\"css_starter\":\"neither\",\"css_prefix_free\":null,\"css_external\":\"\",\"js_library\":\"\",\"js_modernizr\":false,\"js_external\":\"\",\"created_at\":\"2015-03-16T21:56:18.000Z\",\"updated_at\":\"2015-03-16T22:01:01.000Z\",\"session_hash\":\"54bde61c9648ba583268d620d6ad61fa\",\"title\":\"\",\"description\":\"\\n\\nForked from [Justin Noel](http://codepen.io/calendee/)'s Pen [tBnlJ](http://codepen.io/calendee/pen/tBnlJ/).\",\"slug_hash\":\"vEQeVa\",\"head\":\"\",\"private\":false,\"has_animation\":false,\"css_pre_processor_lib\":\"\",\"checksum\":725080857,\"screenshot_uuid\":null,\"team_id\":0,\"css_prefix\":\"neither\",\"template\":false,\"js_module\":null,\"deleted_at\":null,\"deleted_by_user_id\":null,\"hard_delete_at\":null,\"pen_hash\":null}","__jwt":"eyJhbGciOiJIUzI1NiJ9.eyJjbGFpbXMiOnsidXNlcl9pZCI6MX0sImV4cCI6MTY1NjQ2ODE0NH0.9OEW-0k_-YHl5G6DvIwiv30sM5CbrsnJxh_ZsEmgHwg","__processorsMap":{"autoprefixer":"autoprefixer-10","babel":"babel-7","coffeescript":"coffeescript-2","format-1":"format-1","flutter":"flutter-1","haml":"haml-4","less":"less-3","lint-1":"lint-1","livescript":"livescript-1","markdown":"markdown-11","postcss":"postcss-7","pug":"pug-2","sass":"sass-1","scss":"sass-1","sass-ruby-3":"sass-ruby-3","sass-ruby-compass-3":"sass-ruby-compass-3","slim":"slim-3","stylus":"stylus-0","typescript":"typescript-4","vue":"vue-2","vue3":"vue-3"},"__favicon_mask_icon":"https://cpwebassets.codepen.io/assets/favicon/logo-pin-8f3771b1072e3c38bd662872f6b673a722f4b3ca2421637d5596661b4e2132cc.svg","__favicon_shortcut_icon":"https://cpwebassets.codepen.io/assets/favicon/favicon-aec34940fbc1a6e787974dcd360f2c6b63348d4b1f4e06c77743096d55480f33.ico","__path_to_iframe_console_runner":"https://cpwebassets.codepen.io/assets/editor/iframe/iframeConsoleRunner-7549a40147ccd0ba0a6b5373d87e770e49bb4689f1c2dc30cccc7463f207f997.js","__path_to_iframe_refresh_css":"https://cpwebassets.codepen.io/assets/editor/iframe/iframeRefreshCSS-4793b73c6332f7f14a9b6bba5d5e62748e9d1bd0b5c52d7af6376f3d1c625d7e.js","__path_to_iframe_runtime_errors":"https://cpwebassets.codepen.io/assets/editor/iframe/iframeRuntimeErrors-4f205f2c14e769b448bcf477de2938c681660d5038bc464e3700256713ebe261.js","__path_to_processor_worker":"https://cpwebassets.codepen.io/assets/packs/router.js","__path_to_stop_execution_on_timeout":"https://cpwebassets.codepen.io/assets/common/stopExecutionOnTimeout-1b93190375e9ccc259df3a57c1abc0e64599724ae30d7ea4c6877eb615f89387.js","__pen_normalize_css_url":"https://cdnjs.cloudflare.com/ajax/libs/normalize/5.0.0/normalize.min.css","__pen_prefix_free_url":"https://cdnjs.cloudflare.com/ajax/libs/prefixfree/1.0.7/prefixfree.min.js","__pen_reset_css_url":"https://cdnjs.cloudflare.com/ajax/libs/meyer-reset/2.0/reset.min.css"}