Lots of CSS transitions slows page down

 Chrome struggles to render CSS 'transitions' of the colors of lots of HTML elements.


I pass a rainbow of colors through the letters of the words on a page. I put 'span' elements around each letter and change the color of each letter about every 3 seconds. These 'spans' have a CSS class which has a CSS 'transition' so the color changes smoothly.


But I see lots of red warnings in the 'performance' tab of Chrome's 'developer tools'. The color 'transitions' mean there are constant 'long running tasks' of over 100 milliseconds where a third of the time is scripting and two-thirds rendering the CSS.


I am going to fix this by having the 'transition' CSS rule on only a few sentences in the introduction


There are more tips at: bbingo.xyz/t

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