Solving HubSpot Child Theme Headaches: When Your Menu Arrows Go Sideways

Ever dive into HubSpot's Design Manager, create a child theme to customize your site, and suddenly notice something's… off? Maybe a subtle UI element isn't quite right, or a crucial icon has gone rogue? If you're running a store or managing a website on HubSpot, these little details can make a big difference in user experience. That's exactly what happened to a community member recently, and the discussion that followed in the HubSpot Community offers some fantastic insights for anyone dealing with child theme challenges.

The Mystery of the Sideways Arrows

The original poster, who identified as new to website coding and managing a tiny nonprofit's site, ran into a classic child theme inheritance problem. They created a child theme to make some necessary customizations, but the header menu dropdown arrows stopped displaying properly. Instead of pointing down, they were pointing sideways.

Here’s what the arrows looked like in the original, parent theme:

And here’s the unexpected result in the child theme:

This is a common frustration when you're trying to build a store online or customize any HubSpot site, especially if you're not a seasoned developer. The core issue, as several helpful community members pointed out, often boils down to how CSS styles are inherited (or not inherited) from the parent theme to the child theme.

Unpacking the Community's Wisdom: Two Key Theories

Theory 1: Missing Icon Library or CSS Transformation

One community member quickly hypothesized that the parent theme likely uses an icon library (like FontAwesome) or HubSpot's built-in icon function for these arrows. In the child theme, either the icon library wasn't loading, or the CSS rule responsible for rotating the icon (e.g., from a right-pointing default to a down-pointing arrow) was missing or overridden.

Another expert elaborated on this, explaining that these arrows are often not images but font icon characters styled with CSS. A common technique involves a CSS :after pseudo-element using content: "\f078" (or similar) combined with a transform: rotate(...) property. If the child theme's CSS overrides or fails to inherit this rotation, the icon appears in its default, unrotated state – exactly the sideways arrow seen by the original poster.

Theory 2: The Arrows Are Borders, Not Icons

After the original poster shared their live site and child theme preview links, another community member provided a brilliant alternative diagnosis. Upon inspecting the live site, they discovered that the down arrows weren't characters or image files at all! Instead, they were cleverly constructed using the bottom and right borders of a space, rotated to create the arrow shape. The sideways appearance in the child theme could then be due to increased border-width or a missing rotation.

Your Actionable Debugging Guide

Regardless of whether your arrows are font icons or creative border trickery, the debugging steps are similar and highly effective:

1. Use Your Browser's Inspector (Your Best Friend!):
   • Open your page (with the child theme applied) in your browser.
   • Right-click on one of the problematic sideways arrows and select "Inspect" (or "Inspect Element").
   • In the Elements tab, navigate to the specific HTML element that represents the arrow.
   • Look at the "Styles" panel on the right. This is where the magic happens.
2. Pinpoint the CSS Rule:
   • Search the Styles panel for rules targeting classes like hs-item-has-children (a standard HubSpot class for menu items with dropdowns).
   • Specifically look for :after or :before pseudo-elements associated with these classes.
   • Check for properties like transform: rotate(), content:, border-bottom, border-right.
   • If you see a transform: rotate(90deg) (or similar) rule that is crossed out, it means another CSS rule is overriding it. This is a huge clue!
3. Compare Parent vs. Child Theme CSS:
   • In HubSpot's Design Manager, open the CSS files for both your parent theme and your child theme.
   • Search for the specific CSS rules you identified in the browser inspector (e.g., rules for .hs-item-has-children:after).
   • Compare them line by line. If your child theme has its own copy of a CSS file that's supposed to inherit from the parent, it might be out of sync.
   • Look for differences in transform properties, content values, or border styles.
4. Adjusting CSS (Carefully!):
   • Once you've identified the missing or overridden rule, you'll need to add or correct it in your child theme's CSS file.
   • For example, if transform: rotate(90deg) is missing, add it to the relevant selector in your child theme's CSS.
   • If the arrows are borders and appear too thick, check and adjust border-width.
   • Remember that child themes are designed to override parent styles. Ensure your new rules have enough CSS specificity to take effect.

ESHOPMAN Team Comment

This discussion perfectly illustrates why child themes are essential but also highlights their common pitfalls. We strongly agree with the community's approach: start with browser inspection, understand the underlying CSS, and then compare theme files. For e-commerce sites, consistent UI elements like navigation arrows are crucial for a professional look and feel. Don't be afraid to dig into the CSS; it's the most reliable way to ensure your HubSpot storefront behaves exactly as intended, whether you're building a brand new store online or refining an existing one.

Whether you're a seasoned RevOps pro or a marketer just learning to customize your HubSpot site, understanding how child themes interact with CSS is a superpower. It allows you to maintain the integrity of your core theme while making targeted, safe customizations – crucial for any dynamic online presence, especially an e-commerce platform. Don't be shy about leveraging the HubSpot Community; it's a goldmine of practical advice from real experts facing real-world challenges. Happy customizing!