body{margin:0;padding:0;background:#111}.container{display:flex;flex-direction:column;width:100%}.top-part{height:100px;background-color:black}.bottom-part{height:200px;background-color:#2a2a2a}.burn-line{height:8px;background:#ff4500;box-shadow:0 0 5px #ff4500,0 0 10px #ff8c00;filter:url(#fire-noise);position:relative;z-index:10;transform:scaleY(1.5)}