改变背景或修饰火焰。
CSS已解决许多与窗口修饰相关的问题：字体、间距、填充、背景，等等—所有视觉呈现元素。
CSS has addressed many issues related to window dressing: fonts, spacing, padding, backgrounds, and more-all visual presentation elements.
改变背景或修饰火焰。
Make any desired changes or adjustments, and you're done! Change the background or embellish the flames.
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