[英]como trocar a cor em um h class? [closed]
Como eu faço para trocar a cor desse texto？
h5 class ="text-uppercase mb-5 mt-1 font-weight-bold wow fadeInDown" data-wow-delay="0.3s">Preço justo e serviço de qualidade</h5
为什么将em设置为2em（font-size：2em）时h1和p看起来几乎相同，而em是字体大小的x倍
[英]Why h1 and p looks almost the same size when you set them to 2em (font-size: 2em) when em is the units of x times of the font size
拆分按钮是否必须具有Em-Class，属性为unSelectable = On，这是强制性的？
[英]Is it compulsory for a split button to have a Em-Class, with an attribute, unSelectable=On?
在-1em边距顶部的h1标签前面的html中动态插入div
[英]inserting div dynamically in html in front of h1 tag that has margin-top of -1em
对于 html 中的 h1，为什么“padding: 2em”等于 64px？ 我觉得应该是16px*2
[英]For h1 in html, why “padding: 2em” is equal to 64px? I think it should be 16px*2
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