css* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
       align-content: center;
}

body {
  background-image: url("img/david%20berman.jpg");
  background-size: cover;
  background-repeat: no-repeat;
  background-attachment: fixed;
  font-family: sans-serif;
  color: black;
}

#content {
 max-width: 800px;
  height: 80vh;
  overflow-y: scroll;
  padding: 40px;
  margin: 5vh auto;
  background-color: rgba(118, 105, 105, 0.86);
  border: 2px solid black;
    align-content: center;
}

h1 {
  font-size: 3rem;
  margin-bottom: 30px;
    text-align-last: center;
}
.scatter-gif
{
  display: block;
  margin: 20px auto;
}
.section {
  margin-bottom: 30px;
}

h2 {
  font-size: 2rem;
  margin-bottom: 8px;
  border-bottom: 1px solid black;
  padding-bottom: 5px;
}

h3 {
  font-size: 1.rem;
  margin-top: 12px;
  margin-bottom: 6px;
}

ul {
  list-style: disc;
  padding-left: 20px;
}

li {
  margin-bottom: 8px;
}

a {
  color: #b7f8ff;
  text-decoration: underline;
}
.back-link {
  position: absolute;
  top: 10px;
  left: 10px;
  z-index: 10;
  color: white;
  font-size: 14px;
  text-decoration: none;
  border: 2px solid white;
  padding: 4px 12px;
  letter-spacing: 2px;
  margin: 10px;
}