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HTML

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CSS

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CSS preprocessors help make authoring CSS easier. All of them offer things like variables and mixins to provide convenient abstractions.

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CSS Base

About CSS Base

It's a common practice to apply CSS to a page that styles elements such that they are consistent across all browsers. We offer two of the most popular choices: normalize.css and a reset. Or, choose Neither and nothing will be applied.

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JavaScript

About JavaScript Preprocessors

JavaScript preprocessors can help make authoring JavaScript easier and more convenient.

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Babel includes JSX processing.

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HTML 

              
                <a href="https://codepen.io/joosts/pen/bGoewoa" target="_top">Cast Spell</a>

<a href="https://codepen.io/joosts/pen/rNGLMwR" target="_top">Mock User Action</a>
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CSS 

              
                body, html {height: 100%; padding: 0; margin: 0;}
body {
  display: flex; 
  justify-content: center;
  align-items: center;
}
a {
  display: inline-block;
  margin: 0.5rem;
  background: #e9e9ed;
  color: black;
  padding: 0.5rem;
  text-decoration: none;
  border: 1px solid black;
  border-radius: 0.3rem;
}
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JS 

              
                /* 

Hi Adam,

When a user fires an action, he or she wants feedback on a few things:

1. that something is happening
2. when this something is done
3. what the result of this something was

The dull but effective way to do this is to trigger a page load on every action (as illustrated here) and show the result on the screen. 

The fancy but experimental way to do this is to use a javascript toast. In this case you need a spinner (loading animation) during the 'event' for 1 and 2. This loading animation should stop when the action is finished. For 3 you need a link between the event and the toast, as clicking the button and the appearence of the toast can be seconds apart on bad connections. 

Consider this (very realistic) scenario: Change text, press 'save' button, change text, toast appears saying 'Changes saved'. Is the second change also saved? Can you safely navigate away? Should you click the 'save' button again? This causes user stress and is a really bad experience. 

My advice would be: always try to avoid toasts, as they are not designed with resillience in mind.

This GUI Challenge is based on:
https://web.dev/building-a-toast-component/

I am looking forward to your next challenge.

Kind regards,
Joost van der Schee

*/
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999px

Console