How to Create a Vertical Line with CSS

Are you looking to enhance the layout of your website by adding a vertical line? CSS (Cascading Style Sheets) offers a simple and effective way to achieve this. In this article, we will walk you through the process of creating a vertical line using CSS, providing detailed code snippets and examples to ensure that your project remains both easy to implement and safe. So, let’s dive in and master the art of crafting vertical lines with CSS!

1. Introduction to Vertical Lines in CSS

Vertical lines can significantly enhance the visual appeal of your web design. Whether you want to create a sidebar or separate content sections, CSS provides versatile tools to achieve your desired layout.

2. Using the border-left Property

One of the simplest ways to create a vertical line is by using the border-left property. This property allows you to define a line on the left side of an element.

.vertical-line {
  border-left: 2px solid #333;
  height: 200px; /* Adjust the height as needed */

3. Creating a Vertical Line with the ::before Pseudo-Element

The ::before pseudo-element is a powerful tool to insert content before an element. By combining it with CSS positioning, you can effortlessly craft a vertical line.

.vertical-line::before {
  content: "";
  border-left: 2px dashed #f55;
  height: 100%;
  position: absolute;
  left: 50%; /* Adjust to position the line */

4. Adding Gradient Vertical Lines

Gradient lines can add a touch of elegance to your design. Utilize the linear-gradient function to create gradient vertical lines.

.gradient-line {
  background: linear-gradient(to bottom, #55f, #f55);
  width: 2px;

5. Styling the Vertical Line: Colors and Widths

Customization is key when it comes to design. Modify the color and width of your vertical line to match your website’s aesthetic.

.custom-line {
  border-left: 3px solid #8c8;
  height: 150px;

6. Centering the Vertical Line

Centering a vertical line can be tricky, but with a flex container and proper alignment, it’s a breeze.

.centered-line-container {
  display: flex;
  justify-content: center;
  align-items: center;

.centered-line {
  border-left: 2px dotted #555;
  height: 250px;

7. Making the Vertical Line Responsive

In today’s mobile-driven world, responsiveness is essential. Ensure your vertical line adjusts gracefully on various devices.

.responsive-line {
  border-left: 1px solid #999;
  height: 100px;

@media (max-width: 768px) {
  .responsive-line {
    border: none;

8. Troubleshooting Common Issues

Vertical lines might not always behave as expected. Here are some troubleshooting tips:

  • Line Misalignment: Check parent element positioning.
  • Invisible Line: Inspect element styles for conflicting properties.
  • Uneven Line: Ensure consistent height property across browsers.

9. Best Practices for Implementing Vertical Lines

To ensure seamless integration of vertical lines into your projects, consider these best practices:

  • Use semantic HTML elements for clear structure.
  • Opt for relative units (like em or rem) for line heights.
  • Experiment with different line styles (solid, dashed, dotted).
  • Keep accessibility in mind by providing alternative content.

10. Conclusion

Congratulations! You’ve gained a comprehensive understanding of creating vertical lines using CSS. From basic border-left implementation to advanced gradient lines, you can now elevate your web design game. Experiment with various styles, colors, and positions to bring your creative vision to life.


Can I apply vertical lines to inline elements?

Yes, you can. Remember that inline elements might behave differently due to their nature.

Do these techniques work with older browsers?

Most techniques mentioned here are supported by modern browsers. Consider using fallbacks for older ones.

Why is my centered line not aligning correctly?

Double-check the parent container’s alignment properties and make sure they’re correctly set.

Can I animate these vertical lines?

Absolutely! CSS animations and transitions can add dynamic effects to your vertical lines.

Where can I see a live demo of these techniques?

You can see live demos and experiment with code on platforms like CodePen or JSFiddle.

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