CSS Line Height

The CSS line-height property is used to set the height of a line box within a block-level or inline-level element. It specifies the minimum height that a line should occupy, which affects the vertical spacing between lines of text.

The line-height property can take various values, including unitless numbers, length values, percentages, and other CSS length units.

The syntax for the line-height property is as follows:

selector {
  line-height: value;
}

• selector: Represents the CSS class or selector of the element to which the line height will be applied.
• value: Specifies the line height of the element. It can be any valid CSS length unit, such as pixels (px), ems (em), percentages (%), unitless numbers (representing a multiple of the font size), etc.

Example:

p {
  line-height: 1.5;
}

In this example, all <p> elements will have a line height of 1.5 times the font size. If the font size is 16px, the line height will be 24px (1.5 * 16).

You can also use length values or percentages to set an explicit line height:

h1 {
  line-height: 36px;
}

.navbar {
  line-height: 120%;
}

In the first example, all <h1> elements will have a line height of 36px. In the second example, all elements with the class .navbar will have a line height of 120% of their font size.

The line-height property affects the vertical spacing between lines of text and can impact the readability and aesthetics of your text content. A larger line height creates more space between lines, making the text more readable, especially for longer paragraphs. Conversely, a smaller line height may be used for tightly spaced or compact text layouts.

Using the line-height property effectively can help you control the vertical rhythm and spacing of your text, ensuring a pleasing and legible typography for your website. However, it’s essential to strike a balance between line height and font size to maintain good readability and avoid excessive line spacing.