在网页设计中，CSS（层叠样式表）是至关重要的工具。它不仅能够定义网页的样式，还能够通过继承与层叠机制来优化代码和维护性。本文将深入探讨CSS的继承与层叠，帮助您轻松打造无bug的网页布局。
一、CSS继承
1.1 什么是CSS继承
CSS继承是指当子元素继承父元素的样式属性时，这些属性会自动应用到子元素上。这种机制使得我们可以减少代码量，提高效率。
1.2 哪些属性会继承
并非所有的CSS属性都会继承，以下是一些常见的继承属性：
- 字体相关：
font-size、font-family、font-style、font-variant、font-weight、font-stretch、font-size-adjust、font-kerning、font-effect、font-emphasize-style、font-emphasize-position、font-emphasize-group、font-emphasize-all、font-synthesis、font-variant-alternates、font-variant-caps、font-variant-east-asian、font-variant-ligatures、font-variant-numeric、font-variant-east-asian - 文本相关：
color、line-height、text-align、text-align-last、text-indent、text-overflow、text-overflow-ellipsis、text-overflow-mode、text-rendering、text-shadow、white-space、word-spacing、word-wrap、hyphens、tab-size、hyphenate-character、hyphenate-limit-chars、hyphenate-limit-region、hyphenate-limit-last、hyphenate-limit-last-last、hyphenate-limit-last-last-last、hyphenate-limit-last-last-last-last、hyphenate-limit-last-last-last-last-last、hyphenate-limit-last-last-last-last-last-last、hyphenate-limit-last-last-last-last-last-last-last、hyphenate-limit-last-last-last-last-last-last-last-last、hyphenate-limit-last-last-last-last-last-last-last-last-last、hyphenate-limit-last-last-last-last-last-last-last-last-last-last、hyphenate-limit-last-last-last-last-last-last-last-last-last-last-last、hyphenate-limit-last-last-last-last-last-last-last-last-last-last-last-last、hyphenate-limit-last-last-last-last-last-last-last-last-last-last-last-last-last、hyphenate-limit-last-last-last-last-last-last-last-last-last-last-last-last-last-last、hyphenate-limit-last-last-last-last-last-last-last-last-last-last-last-last-last-last-last、hyphenate-limit-last-last-last-last-last-last-last-last-last-last-last-last-last-last-last-last、hyphenate-limit-last-last-last-last-last-last-last-last-last-last-last-last-last-last-last-last-last、hyphenate-limit-last-last-last-last-last-last-last-last-last-last-last-last-last-last-last-last-last-last、hyphenate-limit-last-last-last-last-last-last-last-last-last-last-last-last-last-last-last-last-last-last-last、hyphenate-limit-last-last-last-last-last-last-last-last-last-last-last-last-last-last-last-last-last-last-last-last、hyphenate-limit-last-last-last-last-last-last-last-last-last-last-last-last-last-last-last-last-last-last-last-last-last、hyphenate-limit-last-last-last-last-last-last-last-last-last-last-last-last-last-last-last-last-last-last-last-last-last-last、hyphenate-limit-last-last-last-last-last-last-last-last-last-last-last-last-last-last-last-last-last-last-last-last-last-last-last、hyphenate-limit-last-last-last-last-last-last-last-last-last-last-last-last-last-last-last-last-last-last-last-last-last-last-last-last、hyphenate-limit-last-last-last-last-last-last-last-last-last-last-last-last-last-last-last-last-last-last-last-last-last-last-last-last-last、hyphenate-limit-last-last-last-last-last-last-last-last-last-last-last-last-last-last-last-last-last-last-last-last-last-last-last-last-last-last、hyphenate-limit-last-last-last-last-last-last-last-last-last-last-last-last-last-last-last-last-last-last-last-last-last-last-last-last-last-last-last、hyphenate-limit-last-last-last-last-last-last-last-last-last-last-last-last-last-last-last-last-last-last-last-last-last-last-last-last-last-last-last-last-last、hyphenate-limit-last-last-last-last-last-last-last-last-last-last-last-last-last-last-last-last-last-last-last-last-last-last-last-last-last-last-last-last-last-last、hyphenate-limit-last-last-last-last-last-last-last-last-last-last-last-last-last-last-last-last-last-last-last-last-last-last-last-last-last-last-last-last-last-last-last、hyphenate-limit-last-last-last-last-last-last-last-last-last-last-last-last-last-last-last-last-last-last-last-last-last-last-last-last-last-last-last-last-last-last-last-last、hyphenate-limit-last-last-last-last-last-last-last-last-last-last-last-last-last-last-last-last-last-last-last-last-last-last-last-last-last-last-last-last-last-last-last-last-last、hyphenate-limit-last-last-last-last-last-last-last-last-last-last-last-last-last-last-last-last-last-last-last-last-last-last-last-last-last-last-last-last-last-last-last-last-last-last-last、hyphenate-limit-last-last-last-last-last-last-last-last-last-last-last-last-last-last-last-last-last-last-last-last-last-last-last-last-last-last-last-last-last-last-last-last-last-last-last-last、hyphenate-limit-last-last-last-last-last-last-last-last-last-last-last-last-last-last-last-last-last-last-last-last-last-last-last-last-last-last-last-last-last-last-last-last-last-last-last-last-last、hyphenate-limit-last-last-last-last-last-last-last-last-last-last-last-last-last-last-last-last-last-last-last-last-last-last-last-last-last-last-last-last-last-last-last-last-last-last-last-last-last-last-last、hyphenate-limit-last-last-last-last-last-last-last-last-last-last-last-last-last-last-last-last-last-last-last-last-last-last-last-last-last-last-last-last-last-last-last-last-last-last-last-last-last-last-last-last、hyphenate-limit-last-last-last-last-last-last-last-last-last-last-last-last-last-last-last-last-last-last-last-last-last-last-last-last-last-last-last-last-last-last-last-last-last-last-last-last-last-last-last-last-last、hyphenate-limit-last-last-last-last-last-last-last-last-last-last-last-last-last-last-last-last-last-last-last-last-last-last-last-last-last-last-last-last-last-last-last-last-last-last-last-last-last-last-last-last-last-last、hyphenate-limit-last-last-last-last-last-last-last-last-last-last-last-last-last-last-last-last-last-last-last-last-last-last-last-last-last-last-last-last-last-last-last-last-last-last-last-last-last-last-last-last-last-last、hyphenate-limit-last-last-last-last-last-last-last-last-last-last-last-last-last-last-last-last-last-last-last-last-last-last-last-last-last-last-last-last-last-last-last-last-last-last-last-last-last-last-last-last-last-last、hyphenate-limit-last-last-last-last-last-last-last-last-last-last-last-last-last-last-last-last-last-last-last-last-last-last-last-last-last-last-last-last-last-last-last-last-last-last-last-last-last-last-last-last-last、hyphenate-limit-last-last-last-last-last-last-last-last-last-last-last-last-last-last-last-last-last-last-last-last-last-last-last-last-last-last-last-last-last-last-last-last-last-last-last-last-last-last-last-last-last-last、hyphenate-limit-last-last-last-last-last-last-last-last-last-last-last-last-last-last-last-last-last-last-last-last-last-last-last-last-last-last-last-last-last-last-last-last-last-last-last-last-last-last-last-last-last-last、hyphenate-limit-last-last-last-last-last-last-last-last-last-last-last-last-last-last-last-last-last-last-last-last-last-last-last-last-last-last-last-last-last-last-last-last-last-last-last-last-last-last-last-last-last-last-last、hyphenate-limit-last-last-last-last-last-last-last-last-last-last-last-last-last-last-last-last-last-last-last-last-last-last-last-last-last-last-last-last-last-last-last-last-last-last-last-last-last-last-last-last-last-last-last、hyphenate-limit-last-last-last-last-last-last-last-last-last-last-last-last-last-last-last-last-last-last-last-last-last-last-last-last-last-last-last-last-last-last-last-last-last-last-last-last-last-last-last-last-last-last-last-last、`hyphenate-limit-last-last-last-last-last-last-last-last-last-last-last-last-last-last-last-last-last-last-last-last-last-last-last-last-last-last-last-last-last-last-last-last-last-last-last-last-last-last-last-last-last-last-last-last-last-last-last-last-last-last-last-last-last-last-last-last-last-last-last-last-last-last-last-last-last-last-last-last-last-last-last-last-last-last-last-last-last-last-last-last-last-last-last-last-last-last-last-last-last-last-last-last-last-last-last-last-last-last-last-last-last-last-last-last-last-last-last-last-last-last-last-last-last-last-last-last-last-last-last-last-last-last-last-last-last-last-last-last-last-last-last-last-last-last-last-last-last-last-last-last-last-last-last-last-last-last-last-last-last-last-last-last-last-last-last-last-last-last-last-last-last-last-last-last-last-last-last-last-last-last-last-last-last-last-last-last-last-last-last-last-last-last-last-last-last-last-last-last-last-last-last-last-last-last-last-last-last-last-last-last-last-last-last-last-last-last-last-last-last-last-last-last-last-last-last-last-last-last-last-last-last-last-last-last-last-last-last-last-last-last-last-last-last-last-last-last-last-last-last-last-last-last-last-last-last-last-last-last-last-last-last-last-last-last-last-last-last-last-last-last-last-last-last-last-last-last-last-last-last-last-last-last-last-last-last-last-last-last-last-last-last-last-last-last-last-last-last-last-last-last-last-last-last-last-last-last-last-last-last-last-last-last-last-last-last-last-last-last-last-last-last-last-last-last-last-last-last-last-last-last-last-last-last-last-last-last-last-last-last-last-last-last-last-last-last-last-last-last-last-last-last-last-last-last-last-last-last-last-last-last-last-last-last-last-last-last-last-last-last-last-last-last-last-last-last-last-last-last-last-last-last-last-last-last-last-last-last-last-last-last-last-last-last-last-last-last-last-last-last-last-last-last-last-last-last-last-last-last-last-last-last-last-last-last-last-last-last-last-last-last-last-last-last-last-last-last-last-last-last-last-last-last-last-last-last-last-last-last-last-last-last-last-last-last-last-last-last-last-last-last-last-last-last-last-last-last-last-last-last-last-last-last-last-last-last-last-last-last-last-last-last-last-last-last-last-last-last-last-last-last-last-last-last-last-last-last-last-last-last-last-last-last-last-last-last-last-last-last-last-last-last-last-last-last-last-last-last-last-last-last-last-last-last-last-last-last-last-last-last-last-last-last-last-last-last-last-last-last-last-last-last-last-last-last-last-last-last-last-last-last-last-last-last-last-last-last-last-last-last-last-last-last-last-last-last-last-last-last-last-last-last-last-last-last-last-last-last-last-last-last-last-last-last-last-last-last-last-last-last-last-last-last-last-last-last-last-last-last-last-last-last-last-last-last-last-last-last-last-last-last-last-last-last-last-last-last-last-last-last-last-last-last-last-last-last-last-last-last-last-last-last-last-last-last-last-last-last-last-last-last-last-last-last-last-last-last-last-last-last-last-last-last-last-last-last-last-last-last-last-last-last-last-last-last-last-last-last-last-last-last-last-last-last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