HTML-CSS: Truncate multiline text

Last update on May 28 2022 07:03:41 (UTC/GMT +8 hours)

HTML-CSS : Exercise-43 with Solution

Using HTML, CSS truncates text that is longer than one line.

Use overflow: hidden to prevent the text from overflowing its dimensions.
Set a fixed width to ensure the element has at least one constant dimension.
Set height: 109.2px as calculated from the font-size, using the formula font-size * line-height * numberOfLines (in this case 26 * 1.4 * 3 = 109.2).
Set height: 36.4px as calculated for the gradient container, based on the formula font-size * line-height (in this case 26 * 1.4 = 36.4).
Use background with linear-gradient() to create a gradient from transparent to the background-color.

HTML Code:

<!--License: https://bit.ly/3GjrtVF-->
<!DOCTYPE html>
<html>
<head>
  <meta charset="utf-8">
  <meta name="viewport" content="width=device-width">
  <title>Using HTML, CSS truncates text that is longer than one line</title>
</head>
<body>
<p class="truncate-text-multiline">
    The quick brown fox jumps over the lazy dog. The quick brown fox jumps over the lazy dog.
  The quick brown fox jumps over the lazy dog.
</p>
</body>
</html>

CSS Code:

.truncate-text-multiline {
  position: relative;
  overflow: hidden;
  display: block;
  height: 109.2px;
  margin: 0 auto;
  font-size: 26px;
  line-height: 1.4;
  width: 400px;
  background: #f5f6f9;
  color: #333;
}

.truncate-text-multiline:after {
  content: '';
  position: absolute;
  bottom: 0;
  right: 0;
  width: 150px;
  height: 36.4px;
  background: linear-gradient(to right, rgba(0, 0, 0, 0), #f5f6f9 50%);
}

HTML-CSS Editor:

See the Pen html-css-practical-exercises by w3resource (@w3resource) on CodePen.

HTML-CSS: Tips of the Day

What is the difference between id and class in CSS, and when should I use them?

Example:

#header_id {font-color:#fff} .header_class {font-color:#000}

(Note that CSS uses the prefix # for IDs and . for Classes.)

However color was an HTML 4.01 <font> tag attribute deprecated in HTML 5. In CSS there is no "font-color", the style is color so the above should read:

Example:

#header_id {color:#fff} .header_class {color:#000}

The text would be white.

Ref: https://bit.ly/39Stv4P