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 element by giving it margin-left and margin-right of auto (and it has a set width, otherwise it would be full width and wouldn’t need centering ).

Learn how to center an h1 element horizontally and vertically in the middle of the screen using HTML and CSS.

2011年7月27日 · 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 would disappear. textContent would only change the text of the header. It's probably not a big deal for your h1 but it may make a difference knowing the difference in the future.

2012年7月28日 · Learn how to align a logo image and an H1 heading on the same line using HTML and CSS.

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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:

2015年3月8日 · I need to be able to create a function in JavaScript where all I need to do is type h1("hello") and it will print hello. I want to avoid this method: function h1(text) { document.write('<h...

2023年7月20日 · The header tag in HTML5 is a semantic element used to define a container for introductory or navigational content for a section or the entire page. The h1 tag is used to define the main heading of a webpage or a section. It represents the most important heading and is usually placed at the top of the content hierarchy.

2021年5月20日 · <script> document.addEventListener('DOMContentLoaded', e => { // select the h1 by a class, id, or even tag name // in this example, i'm just selecting it by tag name const h1 = document.querySelector("h1") h1.innerText = "Correct Text" }) </script> (EDIT: OP asked how to change more than one h1 by tag.