Z-Index 99999: The Scream Into The CSS Void

Setting z-index to 99999 is the CSS equivalent of yelling "I SAID MOVE TO THE FRONT" at your monitor. Then discovering your div is still hidden because some parent element has overflow: hidden or position: static. The browser doesn't care about your desperation or how many 9s you type. It's just silently judging your CSS troubleshooting skills.