.youtube-embed {
    width: 100%;
    /* Verhindert, dass das Video breiter als der Container wird */
    max-width: 100%; 
}

.youtube-embed iframe {
    width: 100%;
    /* Moderne Methode: */
    aspect-ratio: 16 / 9;
    height: auto;
}

.slideshow-slogan {
  color: #ffffff;
  font-weight: bold;
  text-align: center;
  font-size: x-large;
  font-family: Calibri, sans-serif;
}

.slideshow-h1 {
  color: #ffffff;
  font-weight: bold;
  text-align: center;
  font-size: xx-large;
  text-transform: uppercase;
  font-family: Calibri, sans-serif
}