This CSS loading animation percentage circle came as a result of an experiment, during the process of making an animated preloader. CSS circle fill animation is made up of one div and a loader, 60+ Best Free Jquery Search Bar HTML & CSS, 30+ Free jQuery Price Range Slider Templates, 50+ Best Image Hover Effects with CSS3 & JavaScript, Best Managed WordPress Hosting Black Friday 2020 {Big Discounts}, Free Simple CSS3 Buttons Template (Freebie), 10+ Best Python GUI Framework for Developers, 15+ Free Bootstrap Flowchart Design HTML & CSS, Best Upcoming Web Design and Development Conferences. It is made of Pure CSS and HTML. CSS circle loading is a web element or a circular progress bar which indicates when pages, media, downloads, and uploads are loading on a website. There are many tutorials for creating or tweaking these progress loading bar plugins.