JavaScript脉冲二进制数字背景效果，最佳实现方法？

<div id="background"></div>

#background {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  font-family: monospace;
  font-size: 20px;
  color: #fff;
  overflow: hidden;
}

@keyframes pulse {
  0% {
    opacity: 0.2;
  }
  50% {
    opacity: 1;
  }
  100% {
    opacity: 0.2;
  }
}

function generateBinaryNumber(length) {
  let binaryNumber = '';
  for (let i = 0; i < length; i++) {
    binaryNumber += Math.round(Math.random());
  }
  return binaryNumber;
}

function updateBackground() {
  const background = document.getElementById('background');
  const binaryNumber = generateBinaryNumber(100); // 生成100位的二进制数字
  background.textContent = binaryNumber;
}

setInterval(updateBackground, 500); // 每500毫秒更新一次背景效果