@charset "utf-8";

    .responsive-video {
      position: relative;
      padding-bottom: 56.25%; /* 16:9 비율 */
      height: 0;
      overflow: hidden;
      max-width: 100%;
    }

    .responsive-video iframe {
      position: absolute;
      top: 0;
      left: 0;
      width: 100%;
      height: 100%;
      border: 0;
    }