Understanding the relationship between CSS height and line-height can help developers create more

Question

Understanding the relationship between CSS height and line-height can help developers create more

Is there a way to use CSS to set the height of a box based on its own line-height or its parent's line-height?

This feature would make it much simpler to create text areas that are a specific multiple of lines, for example, displaying exactly three lines.

I'm looking for a solution that doesn't involve using JavaScript since those tend to be slow and don't work well with layouts that are dynamically re-rendered.

Edit: The line-heights in my situation are specified as unit-less numbers, following the recommendations on MDN. It would be convenient if line-height units weren't necessary to achieve this functionality.

css

Answer 1

Answer №1

The most recent CSS Level 4 specification introduces a novel unit termed lh, although it has yet to gain widespread support at present.

Furthermore, there exists a rlh unit that functions similarly to the rem unit.

This innovative unit enables developers to limit text display to a specific number of lines, such as displaying only 3 lines of text.

.container {
  height: 3lh;
  overflow: hidden;
}

Answer 2

The most recent CSS Level 4 specification introduces a novel unit termed lh, although it has yet to gain widespread support at present.

Furthermore, there exists a rlh unit that functions similarly to the rem unit.

This innovative unit enables developers to limit text display to a specific number of lines, such as displaying only 3 lines of text.

.container {
  height: 3lh;
  overflow: hidden;
}

Answer 3

Answer №2

It appears there may be some confusion regarding the question, but have you considered utilizing relative units like ems?

For instance, if the line height is set to 2ems (or no unit at all) and you wish for the box to be 3 "lines" high without padding taken into account, you could establish the height as 6ems. By doing so, the line height adjusts based on the base unit (font size) and the height becomes flexible using the same base unit.

Below is a sample code snippet:

.myBox {
     line-height: 2; // twice the font-size value
     height: 6ems; // equates to 3 lines tall

In SASS, a similar outcome can be achieved with the following code:

$lineheight: 2; 
$numberoflines: 3; 
.myBox {
    line-height: $lineheight;
    height: $lineheight * $numberoflines;
}

This approach allows for easy modification of values by moving variables to a settings file, eliminating the need to locate and update every selector that utilizes those variables.

Answer 4

It appears there may be some confusion regarding the question, but have you considered utilizing relative units like ems?

For instance, if the line height is set to 2ems (or no unit at all) and you wish for the box to be 3 "lines" high without padding taken into account, you could establish the height as 6ems. By doing so, the line height adjusts based on the base unit (font size) and the height becomes flexible using the same base unit.

Below is a sample code snippet:

.myBox {
     line-height: 2; // twice the font-size value
     height: 6ems; // equates to 3 lines tall

In SASS, a similar outcome can be achieved with the following code:

$lineheight: 2; 
$numberoflines: 3; 
.myBox {
    line-height: $lineheight;
    height: $lineheight * $numberoflines;
}

This approach allows for easy modification of values by moving variables to a settings file, eliminating the need to locate and update every selector that utilizes those variables.

Answer 5

Answer №3

Let me share a clever alternative I came up with

<div style="display: flex; border: 1px solid blue">
    <div>
        <br>
        <br>
        <br>
    </div>
    <div>
        This content is contained in a box that spans at least three lines in height.
    </div>
</div>

Answer 6

Let me share a clever alternative I came up with

<div style="display: flex; border: 1px solid blue">
    <div>
        <br>
        <br>
        <br>
    </div>
    <div>
        This content is contained in a box that spans at least three lines in height.
    </div>
</div>

Understanding the relationship between CSS height and line-height can help developers create more

Answer №1

Answer №2

Answer №3

Similar questions

Items that do not commence from the start of the list

Strategies for making a child div fade out when the parent div is hovered over

Turn off the ability to drag on an HTML page

When you hover over an image, both the image's opacity and the color of the title beneath it change. However, if the title expands to two lines, it messes up

How to achieve a gradual border or box-shadow transition from thick to slim using CSS

The setting of background-size: cover does not affect the height of the background image

Conceal specific image(s) on mobile devices

Adding margin padding to a Material UI Navbar: Step-by-step guide

Border at the Top and Text Alignment Problem

Tips for overlaying a webpage with several Angular components using an element for disabling user interactions

Achieving Vertical Alignment in Bootstrap 4: A Step-by-Step Guide

Adjust the size of the div container while ensuring that all elements are aligned horizontally

Creating a dynamic CSS animation with multiple spans for typing effect

Using :before and :after in CSS, three dots can be created in a horizontal line

Resizing a floated div causes the image to break out

What is the best way to remove horizontal scrolling and reduce element size on mobile devices?

The input element captures the exact x and y coordinates of where the mouse was clicked

Can a webpage be redirected to another page after an animation using only HTML and CSS?

Looking to streamline your design? Find out how to translate multiple elements to the same position seamlessly

CSS: Adjusting the position of tooltips to align with the triggering element (rest of code is fully functional)