How and Why You Should Inline Your Critical CSS
The critical CSS in your project is the CSS that’s used to style the above-the-fold content of your website. Above-the-fold content is what users see on your website first, which can include navigation and other elements. So it’s very important to properly style and render this part of the website as quickly as possible. Modern web development practices often recommend that you inline your critical CSS. It would be placed into your web page like so:
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The aim of this example is to go through applying CSS properties inline inside html code. Inline styles are CSS styles that are applied to one element using the style attribute before closing the opening tag. Inline styling is useful for applying a unique style to a single HTML element. There are several advantages and disadvantages to it that we will discuss.
Critical CSS is an effective, but all-too-rarely used approach for improving page rendering performance. Critical CSS is two things together: Deferred loading of the main stylesheet. Inlining the most vital ("above the fold") styles.
In this example, we’re having a look at the display property of css. Specifically, lets see the inline-block value that can be given to it. You could previously use float to make elements stretch throughout the browser width, while now it is all easier with the inline-block value. Basically, it’s a way to make elements inline, preserving their block capabilities such as width and height, margins and paddings etc.
Usually when you want a horizontal list, you need to use float in the CSS code to make it work, with all its drawbacks. However, there is an alternative with display: inline-block. The problem when you have float in your CSS code is that you need to take some precaution to make the surrounding element to encompass the floated elements, and also to avoid following elements in the code to sneak up next to it.
For the purpose of CSS styling, elements can be generally divided into a few different categories. Two of those categories are block-level elements and inline elements. In my opinion, this is one of those areas that, once understood correctly, can help beginners to take their CSS skills to the next level.
How elements take up space on the page is controlled by their display. There used to be two broad display types in CSS: elements were inline or block-level. Block elements start on a new line and fill the width of their parent container.
In this example, we’ll explain a very useful CSS positioning property, float. The float CSS property specifies that an element should be taken from the normal flow and placed along the left or right side of its container, where text and inline elements will wrap around it. It is supported on all modern browsers and can be used with having to add extra prefixes.
I remember being a young developer during the Internet Explorer 6 days and desperately wanting IE to adopt display: inline-block. The inline-block value is incredibly useful when wanting to control margin and padding on "inline" elements without the need to `block and float` them. One problem that arrises when you use inline-block is that whitespace in HTML becomes visual space on screen. Gross. There are a few ways to remove that space; some of them are just as gross, one is reasonably nicer.
inline styles are not your best option because they override everything else. Quite the opposite really - you want to shy away from inline styles because they limit what can be applied to your element - and it’s really the most tedious method of style application.
On some sites when you see a scrollbar inside a table cell maybe you think they have an inline frame inside the cell, well this can be achieved by using a div using the CSS overflow attribute. The only downside to using this is that you can't change the content inside the cell without changing your code unlike inline frames where you can change the page.