Where Is Squarespace Custom CSS: Navigating the Design Panel for Styling Your Site

By Akim Perminov

Founder & Lead Designer

Custom CSS in Squarespace allows for a higher level of customization beyond what the built-in design options offer. Whether you're aiming to modify the font styles, adjust the color palette, or tweak background attributes, the introduction of custom CSS can transform the overall aesthetic of a site. Squarespace provides a CSS editor that's user-friendly for those with at least a basic understanding of coding, enabling a seamless process to apply these stylistic changes.

Navigating to the custom CSS editor within Squarespace is a straightforward process. From the main dashboard, simply access the Design menu and select Custom CSS. This centralized location permits site-wide styles, applicable to multiple pages or specific to template sections and themes. For those particular adjustments that should only appear on one page, Squarespace allows for the application of CSS directly within individual page settings.

Key Takeaways

  • Custom CSS enhances the design flexibility of Squarespace websites.

  • The CSS Editor is easily accessible via the Design menu in the Squarespace dashboard.

  • Site-wide and page-specific styles can be managed through the CSS Editor.

Accessing Squarespace Custom CSS Editor


To personalize your Squarespace site beyond the default design options, the Custom CSS Editor is your go-to tool. My goal here is to guide you through the steps to access this feature.

Navigating the Squarespace Interface

I start by logging into my Squarespace account. Once logged in, the main dashboard is where my journey begins. My first step is to select the site I wish to edit from the "My Sites" section. This action takes me directly to the site's home menu.

Using the Design Menu

After selecting my site, I look for the "Design" link in the home menu. The Design menu is where I find all the tools necessary to alter the visual aspects of my site. I click on "Design" to expand the list of design options available.

Opening the Custom CSS Panel

Within the Design menu, the "Custom CSS" link is my final destination. I click on it, and I'm presented with the CSS Editor where I can input my custom CSS code. It's important to note that any custom CSS I add here will override the default styles applied by the Squarespace template I'm using.

Basics of Squarespace Custom CSS

In Squarespace, custom CSS can be a powerful tool for personalizing your website's design. As an experienced user, I find that while Squarespace's built-in options provide a lot of flexibility, there are times when I want to make more specific customizations. That's where the Custom CSS Editor comes in handy.

To add custom CSS, I navigate to the Design menu in the backend of my site. From there, Custom CSS is the dedicated section where I can enter my code. It's important to note that changes here affect the entire website, unless I specify otherwise within the code.

The syntax for CSS is straightforward:

selector {

property: value;


Here's a simple breakdown of the components:

  • Selector: This indicates which element on my site I'm targeting.

  • Property: The aspect of the element I'm changing, like color or font-size.

  • Value: What I'm changing the property to.

I always ensure to save the changes after I've entered my CSS. It's an instant way to see my custom styles come to life, and Squarespace's real-time preview is particularly helpful for this. There's also an option to reset the CSS to its default by simply clearing the Custom CSS box if needed.

For newcomers to CSS, understanding a breakdown of basic CSS components and their functions is beneficial before starting with customizations. And for advanced customization, I may sometimes refer to guides on the Squarespace Help Center to ensure that I'm following best practices for a seamless and effective design experience.

Common Use Cases for Custom CSS in Squarespace

Custom CSS is a powerful tool in Squarespace that lets me fine-tune the appearance of my site with precision. Whether it’s styling specific elements or ensuring consistency across devices, custom CSS enables a personalized and professional look.

Styling Pages and Blog Posts

Styling individual pages and blog posts is essential to create a unique and engaging user experience. I use Custom CSS to modify the layout of a page or post, add hover effects to links, or alter the typography to match my brand. This can be done by:

  • Changing font styles and colors

  • Customizing spacing and alignment

  • Adding custom buttons and call-to-action elements

Customizing Headers and Footers

The header and footer are key components of my site's navigation and branding. With custom CSS, I can:

  • Adjust the size and position of my logo

  • Style navigation links to stand out or blend in with my design

  • Manipulate the layout to include additional information or graphics

Adjusting Mobile Styles

Mobile responsiveness is crucial for accessibility and SEO. Squarespace provides a good starting point, but I further tailor mobile views by:

  • Optimizing sizes and spacing for touch screens

  • Tweaking visibility of certain elements only on mobile devices

  • Ensuring that my site's features operate smoothly regardless of the device

Writing Effective Custom CSS

Incorporating custom CSS into your Squarespace site can significantly enhance its aesthetics and functionality. I'll guide you through the essentials to ensure your CSS is both powerful and efficient.

CSS Syntax and Structure

Mastering CSS syntax is crucial; proper structure determines whether a stylesheet will work as intended. Every CSS rule consists of a selector and a declaration block, containing one or more declarations separated by semicolons. Each declaration includes a property and a value, formatted like this:

selector {

property: value;


Maintaining a logical and consistent structure in your CSS file is imperative. I always group related selectors together and comment my code to make it easy to understand and modify.

Selector Usage and Best Practices

Using selectors effectively is key to targeting the elements on your Squarespace site. I recommend using class selectors frequently due to their reusability and low specificity, which makes overriding them simpler if needed. However, I also make sure to use id selectors for unique elements that require distinct styling.

Here are some best practices I follow:

  • Be specific when necessary, but not overly so to avoid conflicts.

  • Reuse classes to reduce code and maintain consistency.

  • Avoid inline styles in HTML to keep styling separate and more manageable.

Responsive Design Techniques

For responsive design, media queries are indispensable. They enable CSS to apply different styles depending on the device's screen size or other features. Here's a simple example:

@media (max-width: 600px) {

.container {

width: 100%;



I employ a mobile-first approach, designing for smaller screens initially and then adding media queries for larger screens. It streamlines the development process and often results in more performant, mobile-friendly sites.

Remember to test your responsive designs on actual devices whenever possible. This practice assures that your users' experience is optimal across all platforms and devices. For more detailed instructions on implementing custom CSS in Squarespace, you can consult resources like The Complete Guide to Custom CSS in Squarespace 7.1.

Managing Custom CSS

When I manage custom CSS on Squarespace, I focus on ensuring that my custom styles are effectively applied, previewed, and any issues are efficiently resolved.

Saving and Applying Changes

To save and apply CSS changes, I navigate to the Custom CSS editor in the Squarespace dashboard. Here, I make sure to click "Save" after entering my code. Squarespace immediately applies the changes to my site upon saving. It's crucial to validate that my CSS syntax is correct to prevent any display issues.

Previewing and Testing

I consistently preview my changes using Squarespace's built-in preview mode. This allows me to see how the custom CSS will affect my site in real-time. Additionally, I test the styles across different browsers and devices to ensure cross-compatibility and a seamless user experience.

Troubleshooting Custom CSS Issues

When faced with CSS issues, I carefully review my code for errors, such as missing semicolons or incorrect property values. If necessary, I use the browser's developer tools to inspect elements and debug the CSS. I also check the Squarespace documentation or forums if I encounter any platform-specific quirks.

Advanced Custom CSS Tips

When working with Squarespace to perfect a site's design, tapping into the power of Custom CSS can make all the difference. I'll walk you through three key techniques: utilizing Developer Tools, leveraging Squarespace's own CSS, and incorporating third-party fonts and icons.

Using Developer Tools for Custom CSS

To precisely target and style elements on your Squarespace website, Developer Tools are invaluable. I often access these tools directly in my browser—Chrome's Developer Tools are particularly robust—and inspect elements on the page. This allows me to see the CSS currently affecting any selected element and experiment with new styles in real time. Remember to copy any successful style tweaks into your Custom CSS editor on Squarespace for lasting changes.

Leveraging Squarespace's Template CSS

Squarespace templates come with built-in CSS that provides a solid foundation for your website's design. I suggest familiarizing yourself with the template's styles before adding your custom code. This way, you can build upon and override the existing styles without conflicting with them. You can find your current template's unique CSS by inspecting elements as mentioned earlier or by exploring the comprehensive guides available that detail common styles used by Squarespace templates.

Implementing Third-Party Fonts and Icons

Adding third-party fonts and icons can boost your website's visual appeal beyond Squarespace's default selection. I've found it straightforward to integrate Google Fonts by linking them in the Custom CSS editor and defining them within the font-family property in CSS. Similarly, for icons, services like FontAwesome provide clear instructions for adding their icon library to your site. Just make sure to use the correct CSS selectors when applying these new fonts and icons to specific elements of your pages.

Optimizing Performance with Custom CSS

When I integrate Custom CSS into my Squarespace site, I prioritize performance to ensure that the site remains fast and responsive. Efficiency is key; smaller, more targeted CSS creates less bloat and faster load times.

  1. Minimize HTTP Requests: By combining selectors and reducing CSS files, I decrease the number of HTTP requests. This is crucial because each file and request can add to the loading time.

  2. Use Efficient CSS Selectors: Complex selectors require more processing power. I stick to class and ID selectors when possible, as they are faster for browsers to process than attribute selectors.

  3. Clean and Organize Your Code: Using a clear structure makes the CSS easier to maintain and can help reduce unnecessary code. I make it a habit to remove unused styles and rules.

    DoAvoidCombine similar stylesUnnecessary nested selectorsShort, clear class namesOverly specific rulesCompress CSS filesMultiple CSS files

  4. Leverage Browser Caching: I make sure to set long lifetime expires headers for my CSS, which means repeat visitors have a faster experience because their browser caches the CSS file.

To apply these techniques, Squarespace has a built-in Custom CSS editor where I can add and control my custom styles. Adding Custom CSS offers me the flexibility to enhance the appearance and performance of my site beyond the built-in design options provided by the platform.

Frequently Asked Questions

In managing your Squarespace site, you might have specific queries about custom CSS. I'll address common questions that can help you tailor your site's design and functionality.

How can I add a custom font using CSS in Squarespace?

To add a custom font using CSS in Squarespace, you'll first need to upload your font files to the Squarespace server and then reference them in your CSS using @font-face. Then, apply your custom font to elements on your site by setting the font-family property in your CSS.

Where can I manage my custom files in Squarespace?

You can manage your custom files in Squarespace by navigating to the 'Custom CSS' section of the Design menu. Here, you can upload and edit CSS files which will directly reflect on the presentation of your site.

What are some examples of Squarespace code injection for enhancing my website?

Examples of Squarespace code injection can include adding third-party widgets, such as social feeds or chatbots, tracking scripts like Google Analytics, or custom JavaScript for advanced interactivity on your site.

How do I access the design section in Squarespace to edit CSS?

To access the design section in Squarespace where you can edit CSS, log into your Squarespace account, choose the desired site, click on 'Design', and then select 'Custom CSS' to enter and edit your custom styles.

Can I apply custom CSS to a specific page on my Squarespace site?

Yes, you can apply custom CSS to a specific page on your Squarespace site by using page-specific IDs or classes that target that page alone, ensuring that the styles don't affect other areas of your site.

How is custom HTML different from CSS in Squarespace, and how can I use it?

Custom HTML is different from CSS in that HTML is used to add content or structure to your site, whereas CSS is used to style and layout your site. You can use HTML in Squarespace through 'Code Blocks' or 'Embed Blocks' to insert widgets, forms, or raw HTML elements.

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Gain an advantage

Having trouble with making your website work? Upgrade your brand in 7 days with our agency-level Squarespace templates!