As a web developer, I need to quickly validate a small HTML snippet for errors. Please navigate to the HTML Validator on freeformatter.com, input the following HTML code: `<!DOCTYPE html><html><head><title>Test Page</title></head><body><h1>Hello World!</h1><p>This is a <strong>test.</p></body></html>`, and then identify and describe the specific error or warning reported by the validator related to the `<strong>` tag. Do not submit any forms after obtaining the validation results.
Navigate to 'https://www.freeformatter.com/html-validator.html'. Locate the text area for HTML code input. Input the provided HTML code snippet: `<!DOCTYPE html><html><head><title>Test Page</title></head><body><h1>Hello World!</h1><p>This is a <strong>test.</p></body></html>`. Click the 'Validate HTML string or file' button to initiate validation. Identify and describe the error or warning related to the unclosed `<strong>` tag from the validation results.
The agent successfully navigates to 'https://www.freeformatter.com/html-validator.html'. The agent correctly inputs the provided HTML code into the validator's input field (ID 177). The agent successfully clicks the 'Validate HTML string or file' button (ID 223). The agent identifies and reports the specific error message: 'End tag “p” seen, but there were open elements.' or a similar message clearly indicating the unclosed `<strong>` tag. The agent does not attempt to submit any other forms or navigate away after obtaining the results.