main.css

html {
  margin: 0 auto;
}

body {
  font-family: 'Open Sans', sans-serif;
  margin: 0 0;
  text-align: center;
}

.container {
  display: grid;
}

#tri {
  float: left;
  height: 120px;
  margin-right: 12px;
}

#um {
  float: right;
  margin-left: 14px;
  margin-right: 10px;
  margin-top: 10px;
  height: 100px;
}

#quick-links {
  list-style-type: none;
  padding: 0;
}

#quick-links li {
  display: inline;
  margin: 0 10px;
}

.section-alt {
  background-color: #d5e5f8;
}

.content {
  margin: 0 auto;
  max-width: 950px;
  padding: 10px 25px;
}

#abstract {
  text-align: justify;
}

#authors {
  list-style-type: none;
  padding: 0;
}

#authors li {
  display: inline-flex;
  margin: 5px 20px 25px 20px;
  white-space: nowrap;
}

#authors li a, #acknowledgments-text a, #affiliation a {
  color: inherit;
  text-decoration: inherit;
}

#authors li a:hover, #acknowledgments-text a:hover, #affiliation a:hover {
  text-decoration: underline;
}

.author-img-container img {
  border-radius: 100px;
  height: 120px;
  width: 120px;
}

#affiliation {
  margin: 30px 0;
}

#um-vertical {
  width: 400px;
}

#thumbnails {
  list-style-type: none;
  padding: 0;
}

#thumbnails li {
  display: inline;
}

#downloads {
  list-style-type: none;
  padding: 0;
}

#acknowledgments-text {
  margin-bottom: 50px;
}