@media only screen and (max-width: 768px) {
  body {
    background-size: cover;
    /* 背景图片尺寸覆盖整个屏幕 */
    background-image: url("https://pic.imgdb.cn/item/66adfd0cd9c307b7e9a6bd94.jpg");
    /* 设置初始背景图片 */
  }

  h1 {
    text-align: center;
    color: white;
    margin-top: 30px;
  }

  .container2 {
    display: flex;
    justify-content: center;
    /* 水平居中 */
    align-items: center;
    /* 垂直居中 */
    margin-top: -30px;
  }

  .content:hover {
    background: rgb(0 0 0 / 50%);
  }
  
  .content {
    width: 330px;
    padding: 20px;
    border-radius: 10px;
    background-color: rgba(250, 248, 248, 0.044);
    box-shadow: 0 4px 8px rgba(0, 0, 0, 0.1);
    margin-top: 10px;
    /* 将卡片在垂直方向上向下移动一定距离 */
    text-align: center;
    color: white;
    font-weight: bolder;
    font-size: 17px;
    line-height: 1.6em; /* 设置行高,即行间距 */
  }

  #first-line {
    color: white;
    font-weight: 900;
  }

  #second-line {
    color: white;
    font-weight: 900;
  }

  #third-line {
    color: white;
    font-weight: 900;
  }

  #sixth-line {
    color: white;
  }

  #last-line {
    color: white;
  }

  .contianer3 {
    display: none;
    display: flex;
    justify-content: center;
    align-items: center;
  }

  #aplayer {
    width: 330px;
    border-radius: 10px;
    padding: 20px;
    margin: 0 auto;
  }

  .button-contianer {
    display: flex;
    justify-content: center;
    gap: 7px; /* 按钮间的间隔 */
  }

  #changeBg {
    background-color: rgba(249, 127, 147, 0.445); /* 背景色 */
    color: white; /* 文字颜色 */
    padding: 10px 20px; /* 内边距 */
    border: none; /* 去掉边框 */
    border-radius: 20px; /* 圆角 */
    cursor: pointer; /* 鼠标样式 */
    font-weight: 900;
    width: 95px; /* 设置按钮宽度 */
    height: 40px; /* 设置按钮高度 */
  }

  #musicButton {
    background-color: rgba(249, 127, 147, 0.445);
    color: white;
    padding: 10px 20px;
    border: none;
    border-radius: 20px;
    cursor: pointer;
    font-weight: 900;
    width: 95px;
    height: 40px;
  }

  #nextPageButton {
    background-color: rgba(249, 127, 147, 0.445);
    color: white;
    padding: 10px 20px;
    border: none;
    border-radius: 20px;
    cursor: pointer;
    font-weight: 900;
    width: 95px;
    height: 40px;
  }

  #changeBg:hover,
  #musicButton:hover,
  #nextPageButton:hover,
  #changeBg:active,
  #musicButton:active,
  #nextPageButton:active {
    background-color: rgb(239, 129, 145); /* 按钮激活时的背景色 */
  }
}