# Prevent Content Flash
## Setup
**Attribute**: `sf-noflash = true`
**Where**: [Form Container](/superform/essentials/form-container.md) or *any* element
The `sf-noflash` attribute is used to temporarily hide a form and/or form elements while Superform is initializing.
This prevents elements from flashing or appearing prematurely before the form is fully interactive and styled, ensuring a smoother user experience. Can be used for any element (eg. errors in initial step)
{% hint style="warning" %}
Additional CSS required. Read below.
{% endhint %}
### Requirements
To make `sf-noflash` effective, include the following CSS in the `` of your HTML document:
#### **CSS ****required**
```html
```
This CSS rule sets `opacity: 0` to any element with the `sf-noflash` attribute, effectively hiding it on initial load.
### **Can be used to solve:**
1. Steps (in a multistep form) flashing on initial load
2. Error elements flashing on initial load
**HTML Example**
{% code title="index.html" %}
```html
Step 1: Add [sf-noflash] CSS rule in the <head> of your page.
Step 2: Add the sf-noflash = true directive.
### 🚫 Without `sf-noflash`
{% embed url="" %}
Initial load without `sf-noflash`
{% endembed %}
### ✅ With `sf-noflash = true`
{% embed url="" %}
---
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