Create a CSS-based typing animation for each line in a sequence

Question

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  <div class='text-container'>
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</div>

*{
  padding: 0;
  margin:0;
  box-sizing: border-box;
}

@keyframes typing {
  from { width: 0; }
  to { width: 100%; }
}

div.screen {
    background-color: #032f7c;

    div.text-container {
      padding: 20px;
      
      p.text {
        font-family: monospace;
        color: #ebf6ff;
        overflow: hidden;
        white-space: nowrap;
        letter-spacing: 1.5px;
        animation: typing 5s steps(90, end);
      }
    }
  }

What I want to do is display text to the user with a typing animation here, line by line, top to bottom. I've tried a lot of things but I can't find a solution other than defining a different p.text for each keyframe element. This makes my code look like spaghetti because there are 17 p.text elements. what do I do?

Here is the codepen link for this issue: https://codepen.io/mehmetguduk/pen/RwJqzpN

Answer 1

You need to apply the delay manually to each row. For SCSS, an example code snippet to do this is to use a @for loop and then multiply the index by the duration of the animation.

@for $i from 0 through 20 {
      p.text:nth-of-type(#{$i + 1}) {
        animation-delay: #{$i * 4}s;
      }
    }

Of course, this will require some additional tweaking to achieve perfect timing, but should give you a rough idea of ​​how to fix this problem.

Make sure your animation state is also set to both, so the text is hidden at the beginning and remains visible after the animation ends.

edit:

You can also use JavaScript to set animation delays as follows:

document.querySelectorAll('p.text').forEach((el, i) => el.style.animationDelay = `${i * 5}s`)