取代<代码>#id 消除最突出的问题和进口问题始终是一个更好的想法?
#content ul li a {font-size:10px}
#content .demo ul li a {font-size:15px}
取代<代码>#id 消除最突出的问题和进口问题始终是一个更好的想法?
#content ul li a {font-size:10px}
#content .demo ul li a {font-size:15px}
<代码>id为识别符号,理想的是,它只应用于某一项内容,而<代码>}<>>>>则仅用于某一项内容。 可多次用于多个要素。
SEE: Id vs 级
某类人胜诉时总是胜诉,鉴于同一要素有两个相互冲突的规则,浏览器将根据规则的特殊性计算每项规则的分数。 规则的每一部分都裁定了要点,然后适用了最要点的规则。
例如:
#content ul li a {font-size:10px} = 100 + 1 + 1 + 1 = 103
#content .demo ul li a {font-size:15px} = 100 + 10 + 1 + 1 + 1 = 113
帮助的希望
无,我认为,只应当使用 Java本海事组织处理的独特内容。
如果计算了特别安全局规则的重要性,则其具体程度高于类别,但这不能成为使用规则的理由。
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