Jose Grady

Jose Grady


Understanding Relative CSS Units

Understanding key differences between absolute and relative units in CSS is crucial for building fluid layouts and responsive designs.

This article aims to demystify relative length units. In contrast to absolute length units (with px as the best known representative), relative length units specify a length relative to something else. This “something else” can be of various types, e.g., a parent element’s font size, the width of a parent container, or the height of the viewport.Both types of units have the term length in common, but what exactly is a length unit in this context? There are font-relative length units (e.g., em, rem), which are relative to characters or font-related properties of an element. Additionally, there are length units that are relative to the viewport (e.g., vw, vh).

Another common CSS data type in the context of relative units is the percentage (%). There are also CSS properties that accept integer values. The most common use case for such a unitless value is to use it with the line-height property.

Relative units are especially important from the perspective of fluid layouts and web accessibility to support users that rely on zooming. These fluid layouts are based on a proportional design, where lengths are defined in terms of percentages regarding a container.

Therefore, components based on relative units might change in size at runtime because they are (re)calculated with respect to a contextual container, e.g., by rotating a device or by decreasing the size of a browser window.

Font-related CSS units

First, we’ll look at how the most common relative font-related CSS units work: em and rem.

#css #web-development #programming #developer

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Understanding Relative CSS Units

Ahmed Barakat



Ahmed Barakat



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Alayna  Rippin

Alayna Rippin


Creating a CSS Visual Cheatsheet

The other day one of our students asked about possibility of having a CSS cheatsheet to help to decide on the best suited approach when doing this or that layout.

This evolved into the idea of making a visual CSS cheatsheet with all (most) of the common patterns we see everyday and one of the best possible conceptual implementation for them.

In the end any layout could and should be split into parts/blocks and we see every block separately.

Here is our first take on that and we would be happy to keep extending it to help us all.

Please, send you suggestions in the comments in community or via gitlab for the repeated CSS patterns with your favourite implementation for that so that we will all together make this as useful as it can be.

#css #css3 #cascading-style-sheets #web-development #html-css #css-grids #learning-css #html-css-basics

Aisu  Joesph

Aisu Joesph


CSS Alignment Made Simple

CSS is seen as an impediment in web development for many of us. Most of the time it looks like even when you follow the rules and everything seems clear, it still doesn’t work the way you want it to.

Therefore, the purpose of this article is to make some features of CSS much easier to understand.

The thing I want to address now is the alignment of the elements.

Without further ado, here are some of the most common scenarios one might encounter when it comes to this topic and how they can be approached.

#css-center #css-position #css-flexbox #css-center-image-in-a-div #css

This CSS Cut Out Effect is Guaranteed to Blow Your Mind 🤯

This effect is so cool and just fun to see. What it comes down to is having a background image show through the text.

How it works is that we will have a div that will have the image as a background. On that, we put our text element, using blend-mode it will show through the image.

The result you can see and touch on this Codepen.

#css #css3 #html-css #css-grids #learning-css #html-css-basics

CSS Animation: translate3d, backdrop-filter, and Custom Tags

In this tutorial, we are going to learn:

  • how to create a smooth animation using the CSS transform translate3d prop.
  • why we’d want to use the cubic-bezier transition timing function and this function’s benefits.
  • how and why we use custom tags.
  • if you watch the video to the end, I also provide a bonus tip on using backdrop-filter to style some frost/blur style on background.

#css #css animation #css / style sheets #css animations #css background