body {
  background-color: #285890;
  color: black;
  font-family: Georgia, serif;
}

#top-matter {
  width: 840px;
  background-color: #666;
  color: white;
  border: 5px solid #999;
  padding: 1em;
  text-align: center;
  margin: 30px auto 0 auto;
  font-family: Futura, Calibri, sans-serif;
  background-image: url(numbers-fade.jpg);
  background-repeat: no-repeat;
}
#top-matter a {
  text-decoration: none;
  color: white;
  border-bottom: 1px dashed white;
}

#main {
  width: 800px;
  padding: 1em 2em 1em 2em;
  margin: 0 auto 0 auto;
  border-left: 2px solid white;
  border-right: 2px solid white;
  background-color: #f0f0f0;
}

.chunk { /* of text */
  margin: 1em auto;
  width: 98%;
}

#navbar {
  border-bottom: 1px solid #e0e0e0;
  text-align: center;
}

.navitem {
  background-color: #d0d0d0;
  border-width: 1px;
  padding: 0.2em 1em 1px 1em;
}

.navitem.selected {
  background-color: #f8f8f8;
  border: 1px solid black;
  border-color: #e0e0e0;
  border-width: 1px 1px 0 1px;
}

#announcements {
  background-color: white;
  color: #333;
  width: 75%;
  padding: 0.25em 2em;
  border: 1px dashed #ccc;
}

th { text-align: left; }

h3 {
  text-align: center;
  font-family: Futura, Calibri, sans-serif;
  margin: 0.5em auto;
  width: 80%;
  border-bottom: 1px solid blue;
}


h3 {
  text-align: center;
  font-family: Futura, Calibri, sans-serif;
  margin: 0.5em auto;
  width: 80%;
  border-bottom: 1px solid blue;
}

h4 {
  text-align: left;
  font-family: Futura, Calibri, sans-serif;
  margin: 0.5em auto;
  width: 80%;
}

img {
  padding: 0;
  display: block;
  margin: 15px auto;
  max-height: 100%;
  max-width: 90%;
}

.course-title {
    margin: 1.5em auto;
}

.instructor-info {
    display: flex;
    align-items: flex-start;
    gap: 0.5em;
    margin: 1em 0 2em 0;
    padding: 0.6em 0.6em;
}

.instructor-info .photo img {
    border-radius: 20px;
    box-shadow: 0 2px 8px rgba(40, 88, 144, 0.12);
    margin: 0;
    width: 130px;
    height: auto;
    object-fit: cover;
}

.instructor-info .bio {
    flex: 1;
    text-align: justify ;
}

p {
    text-align: justify;
}

li {
    margin-bottom: 0.2em;
}