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2014年4月15日 · text-align: center is best choice but if you still want to center it using margin: 0 auto you have assign some width to H1 (a block) element. You can center a block-level …

2011年3月23日 · Size for h1 - h6 tags are different from browser to browser. There is no W3 spec that enforces standard size for heading tags. Each browser has implemented its own.

Standard quote that br inside h1 is valid. Let's teach more people to read the current standard. 4.3.6 "The h1, h2, h3, h4, h5, and h6 elements" says:

2012年3月2日 · The innerHTML property changes everything inbetween the h1 tags, which could mean that if there was something else between the h1 tags, like an emphasis or strong tag it …

2019年2月9日 · Learn how to align a logo image and an H1 heading on the same line using HTML and CSS.

According to web standards you aren't allowed to put block elements into inline elements. As h1 is a block element and a is an inline element the correct way is:

2022年6月21日 · See the snippet the snippet below that makes use of Flexbox. So instead of setting the h1 to an inline-block, you can make the header a flex container. A flex container will …

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2013年12月13日 · Since the accepted answer's CSS3 option vertically aligns the containing div and not the h1 tag as requested, this answer shows how that h1 can be vertically aligned …