What is the best way to reduce a specific value gradually over time using Sass?

Question

What is the best way to reduce a specific value gradually over time using Sass?

Is it possible to add a sparkle effect using Sass and adjust the timing of the animation? I want the time between opacity changes to decrease gradually until the custom property $time reaches 0.1, at which point the animation should stop. How can I achieve this effect? Additionally, the output CSS file shows a space between the $time variable and the "s" for seconds. Is there a way to automatically remove this space?

$time: 1*0.9;

@keyframes sparkle {
  from { opacity: 1; }
  to { opacity: 0; }
}
.progress {
  animation: sparkle ($time)s infinite alternate;
}

Any insights or suggestions would be greatly appreciated!

css animation sass

Answer 1

Answer №1

If you wish to halt the animation and keep the element at opacity: 0;, make sure to use forwards instead of alternate.

To achieve a gradual acceleration in the transition, consider incorporating ease-in or experimenting with different cubic-bezier values. For testing purposes, visit this site:

To eliminate any excess whitespace in your Sass code, utilize functions like this:

@function remove-space($str) {
  @while (str-index($str, ' ') != null) {
    $index: str-index($str, ' ');
    $str: "#{str-slice($str, 0, $index - 1)}#{str-slice($str, $index + 1)}";
  }
  @return $str;
}

This specific code snippet can be found here: How to remove whitespace in SASS string?

@keyframes blink {
  from { opacity: 1; }
  to { opacity: 0; }
}
.highlight {
  width: 100px;
  height: 100px;
  background: red;
  animation: blink 2s cubic-bezier(1,.23,.33,.3) forwards;
}

<div class="highlight"></div>

Answer 2

If you wish to halt the animation and keep the element at opacity: 0;, make sure to use forwards instead of alternate.

To achieve a gradual acceleration in the transition, consider incorporating ease-in or experimenting with different cubic-bezier values. For testing purposes, visit this site:

To eliminate any excess whitespace in your Sass code, utilize functions like this:

@function remove-space($str) {
  @while (str-index($str, ' ') != null) {
    $index: str-index($str, ' ');
    $str: "#{str-slice($str, 0, $index - 1)}#{str-slice($str, $index + 1)}";
  }
  @return $str;
}

This specific code snippet can be found here: How to remove whitespace in SASS string?

@keyframes blink {
  from { opacity: 1; }
  to { opacity: 0; }
}
.highlight {
  width: 100px;
  height: 100px;
  background: red;
  animation: blink 2s cubic-bezier(1,.23,.33,.3) forwards;
}

<div class="highlight"></div>

What is the best way to reduce a specific value gradually over time using Sass?

Answer №1

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