#animation,body{background-repeat:no-repeat;background-size:cover;background-position:center center;height:100vh;overflow:hidden}body{background-image:url('../images/bg.jpg?t=20250623');background-color:#11b5e3}#animation{background-image:url('../images/animation.png?t=20250623');width:100vw;animation-name:scaleAnimation;animation-duration:2s;animation-iteration-count:infinite;transition-timing-function:ease-in-out}@keyframes scaleAnimation{0%,50%{transform:scale(1)}25%,75%{transform:scale(1.2)}}#btn_start{width:53vw;padding-top:24px}#div_btn_start{position:fixed;right:0;top:70vh;left:0;z-index:1030}