/* 设置全局字体为 Roboto Condensed */
    body,
    h1,
    h2,
    p,
    span,
    a,
    button {
      font-family: 'Roboto Condensed', sans-serif;
    }

    .toast {
      visibility: hidden;
      min-width: 250px;
      margin-left: -125px;
      background-color: #333;
      color: #fff;
      text-align: center;
      border-radius: 8px;
      padding: 16px;
      position: fixed;
      z-index: 1;
      left: 50%;
      bottom: 30px;
    }

    .toast.show {
      visibility: visible;
      animation: fadein 0.5s, fadeout 0.5s 1s;
    }

    @keyframes fadein {
      from {
        bottom: 0;
        opacity: 0;
      }

      to {
        bottom: 30px;
        opacity: 1;
      }
    }

    @keyframes fadeout {
      from {
        bottom: 30px;
        opacity: 1;
      }

      to {
        bottom: 0;
        opacity: 0;
      }
    }

    /* 移除复制按钮聚焦时的轮廓并设置边框为透明 */
    button {
      outline: none;
      border: 1px solid transparent;
    }