如何将背景图像与其容器右侧的绝对距离定位？

<div class="container">
  <div class="content">
    这是内容区域
  </div>
</div>

.container {
  position: relative;
  width: 100%;
  height: 300px;
  background-color: #ccc;
}

.content {
  position: absolute;
  right: 50px; /* 距离容器右侧的距离 */
  top: 50px; /* 距离容器顶部的距离 */
}

.container::before {
  content: "";
  background-image: url("your-image-url"); /* 替换为你的背景图像URL */
  background-size: cover;
  background-position: center;
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  z-index: -1;
}