纯JS制作跟随鼠标移动的炫彩气泡，光标动画效果ui

document.addEventListener(‘mousemove‘, function(e) {
  let body = document.querySelector(‘body‘);
  let circle = document.createElement(‘span‘);
  let x = e.offsetX;
  let y = e.offsetY;
  circle.style.left = x + "px";
  circle.style.top = y + "px";
  let size = Math.random() * 100;
  circle.style.width = 20 + size + "px";
  circle.style.height = 20 + size + "px";
  body.appendChild(circle);
  setTimeout(function() {
    circle.remove();
  }, 1800);
});

* {
  margin: 0;
  padding: 0;
}

body {
  overflow: hidden;
  background: #ecf0f3;
  height: 100vh; 
}

.logo {
  font-family: "Montserrat", sans-serif;
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    flex-direction: column; 
  color: #000;
  font-size: 50px;
}

span {
  height: 50px;
  width: 50px;
  border-radius: 50%;
  position: absolute;
  pointer-events: none;
  background: #55b9f3;
  transform: translate(-50%, -50%);
  animation: blow 4s linear infinite;
}


@keyframes blow {
  0% {
    transform: translate(-50%, -50%);
    opacity: 1;
    filter: hue-rotate(0deg);
  }
  100% {
    transform: translate(-50%, -1000%);
    opacity: 0;
    filter: hue-rotate(720deg);
  }
}