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CodePen is an online community for testing and showcasing user-created HTML, CSS and JavaScript code snippets. It functions as an online code editor and open-source learning environment, where developers can create code snippets, called "pens," and test them. It was founded in 2012 by full-stack developers Alex Vazquez and Tim Sabat and front ...
HTML form. A webform, web form or HTML form on a web page allows a user to enter data that is sent to a server for processing. Forms can resemble paper or database forms because web users fill out the forms using checkboxes, radio buttons, or text fields. For example, forms can be used to enter shipping or credit card data to order a product ...
A recommendation of A MathML for CSS Profile was later released on 7 June 2011; [8] this is a subset of MathML suitable for CSS formatting. Another subset, Strict Content MathML, provides a subset of content MathML with a uniform structure and is designed to be compatible with OpenMath. Other content elements are defined in terms of a ...
Collagen is a protein responsible for healthy joints and skin elasticity or stretchiness. It's in your bones, muscles, and blood, making up three-quarters of your skin and one-third of the protein ...
Cold intolerance isn’t an illness but is a symptom of an underlying condition. It may be connected to issues with thyroid regulation, the hypothalamus, or blood flow. Or it may be a symptom of ...
Shortness of breath, nausea, or lightheadedness. If you're having trouble breathing for no apparent reason, you could be having a heart attack, especially if you're also having one or more other ...
HIV can progress into AIDS if left untreated. The World Health Organization estimated at the end of 2020 that about 37.7 million people are living with HIV worldwide.
e. Cascading Style Sheets (CSS) is a style sheet language used for specifying the presentation and styling of a document written in a markup language such as HTML or XML (including XML dialects such as SVG, MathML or XHTML). [ 1 ] CSS is a cornerstone technology of the World Wide Web, alongside HTML and JavaScript.