.fit-image {
  width: 100%;
  height: 100%;
  object-fit: contain;
  display: block;
}

.slide-image {
  padding: 10px;
  text-align: center;
}


.video-caption {
text-align: left;
padding: 5px;
border-width: 1px 1px 1px 1px;
border-style: solid;
border-color: black;
background: #ffffffBF;
font-weight: 500;
margin-bottom: 50px;
}

.citation {
  font-size: 12px;
  font-weight: 300;
}


.presentation-subtitle {
background: #ffffffBF;
text-align: left;
padding: 0 20px;
margin: 0 10px;
width: 100%;
max-height: 80px;
font-weight: 600;
font-size: 28px;
}


.presentation-date {
text-align: right;
font-weight: 500;
padding: 2px 20px;
margin: 0 20px;
font-size: 20px;
}


.horizontal_dotted_line {
border-bottom:
2px dotted gray;
}

.footer-copyrite {
font-weight: 300;
text-align: right;
padding: 2px 20px;
margin-top: 20px;
}


.footer-course {
text-align: left;
font-weight: 500;
padding: 0 20px;
margin-top: 20px;
border-top: 2px dotted gray;
border-bottom: 2px dotted gray;
}

.slide-title {
background: #ffffffBF;
text-align: left;
padding: 0 20px;
width: 100%;
font-weight: 800;
font-size: 30px;
}

.presentation-title {
background: #ffffffBF;
text-align: left;
padding: 0 20px;
font-weight: 800;
font-size: 40px;
}


.presentation-image {
  padding: 10px;
  text-align: center;
}


.feature{
border-width: 1px 1px 1px 4px;
border-style: solid;
border-color: black;
background: #b4a7d680;
padding: 10px;
font-weight: 600;
margin-bottom: 50px;
text-align: left;
}

.right-box {
  background: white;
  border-radius: 15px;
  text-align: center;
}

.right-text {
padding: 5px 20px;
font-size: 13px;
text-align: left;
}

.text-box {
background: #ffffffBF;
padding: 10px 40px;
font-size: 18px;
text-align: left;
}

.right-list > ul {
padding-left: 1em;
font-size: 13px;
text-align: left;
}


.caption-box {
  background: white;
  border-radius: 5px;
  text-align: center;
  padding: 10px;
}

.feature-caption {
font-size: 15px;
text-align: center;
font-style: italic;
padding: 5px 20px;
}

/* Container to enforce widescreen spacing */
.video-container {
  position: relative;
  width: 100%;
  max-width: 800px; /* Keeps the video from overwhelming the slide text */
  margin: 0 auto;
  padding-bottom: 56.25%; /* The magic number for a flawless 16:9 ratio */
  height: 0;
  overflow: hidden;
}

/* The YouTube iFrame targeting */
.video-container iframe,
iframe[src*="youtube.com"] {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  border: 0;
  border-radius: 8px; /* Smooth corners for modern slide decks */
  box-shadow: 0 10px 25px rgba(0, 0, 0, 0.25); /* Adds depth on top of slide backgrounds */
}