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In a tutorial [Bramus] takes us through using the trigonometric functions in CSS. These are supported in all major browsers since Chrome 111, Firefox 108 and Safari 15.4.

Output: The results of executing the CSS, HTML, and JavaScript entered into the sections of the page. Figure A shows jsFiddle loaded in Internet Explorer 9 with empty code panes.

If a section feels boring, add a bold feature. As you continue learning HTML, CSS and JavaScript, keep practising and experimenting. You will gain confidence and improve your coding skills.