Very simple and tiny spinner that never gets frozen (CSS only). Less than 0.25kb when gzipped and minified!
Fork the repo and edit spinner.css as you want. You can change its width, height, stroke size (by changing the border-width), animation speed (by changing the animation-duration), color (by changing the border-color) etc.
Open the demo and see how simple and beautiful it is.
IE10+ and all the modern browsers