from playwright.sync_api import sync_playwright

with sync_playwright() as p:
    browser = p.chromium.launch(headless=True)
    page = browser.new_page()
    page.goto("http://127.0.0.1:5050/")
    
    # Click tail tab
    page.click("a[data-tab='tail']")
    page.wait_for_timeout(500)
    
    # Check if tab-tail is visible
    display = page.evaluate("window.getComputedStyle(document.getElementById('tab-tail')).display")
    print("tab-tail display:", display)
    
    # Dump HTML of tab-tail if display is block
    if display == "block":
        bounding_box = page.locator("#tab-tail").bounding_box()
        print("tab-tail bounding box:", bounding_box)
        
    browser.close()