index.css

html, body {
  height: 100%;
}

.navbar {
  font-weight: 600;
}

header {
  position: relative;
  height: 100%;
  min-height: 600px;
  padding-top: 110px;
  padding-bottom: 60px;
  background: #131922;
}
@media (max-width: 767px) {
  header {
    padding-top: 80px;
  }
}
header .profile-image {
  display: inline-block;
  width: 140px;
  height: 160px;
  border-radius: 5px;
  background-repeat: no-repeat;
  background-position: center 10%;
  background-size: cover;
}
header h1 {
  font-weight: 600;
  color: white;
}
header p {
  font-size: 1.2em;
  color: #ccc;
}
header p .link-btn {
  display: inline-block;
  margin: 10px;
  border: 1px solid #ccc;
  border-radius: 5px;
  padding: 7px 15px;
  color: #ccc;
  text-decoration: none;
  outline: none;
}
header p .link-btn:hover {
  border-color: white;
  color: white;
}
header .affiliation {
  margin-top: 30px;
}
header .affiliation div {
  margin-top: 10px;
}

section {
  padding-top: 60px;
}
section h2 {
  margin-top: 0;
  margin-bottom: 20px;
  text-align: center;
}
section .content {
  margin: auto;
  max-width: 700px;
}
section .content .highlight {
  background: #eee;
  padding: 0.5em;
}

#about .social {
  margin: 20px 0;
  text-align: center;
}
#about .social img {
  width: 40px;
  border-radius: 5px;
}
#about .video-container {
  width: 500px;
  max-width: 100%;
}
#about .video-container .video-wrapper {
  position: relative;
  padding-bottom: calc(100% / 16 * 9);
}
#about .video-container .video-wrapper iframe {
  position: absolute;
  width: 100%;
  height: 100%;
  border: none;
}

#tweets .content {
  text-align: center;
}
#tweets .content iframe {
  height: 500px !important;
}

#projects .content {
  max-width: 900px;
}
#projects .content a.project {
  position: relative;
  display: inline-block;
  margin: 10px;
  width: 250px;
  height: 250px;
  border: 1px solid #ddd;
  border-radius: 3px;
  overflow: hidden;
  cursor: pointer;
}
#projects .content a.project::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  -webkit-transition: background 0.3s linear;
          transition: background 0.3s linear;
}
#projects .content a.project .img-container {
  width: 100%;
  height: 60%;
  background-size: cover;
  background-repeat: no-repeat;
  background-position: center center;
}
#projects .content a.project .img-container.contain {
  background-size: contain;
}
#projects .content a.project .description {
  position: absolute;
  bottom: 0;
  width: 100%;
  height: 40%;
  background: #ECF0F1;
  color: #34495e;
  -webkit-transition: all 0.3s linear;
          transition: all 0.3s linear;
}
#projects .content a.project .description .name {
  margin: 15px;
  margin-bottom: 5px;
  font-weight: 600;
}
#projects .content a.project:hover::before {
  background: rgba(0, 0, 0, 0.5);
}
#projects .content a.project:hover .description {
  background: #555;
  color: white;
}
#projects .content .modal-body {
  text-align: left;
}
#projects .content .modal-body img {
  width: 100%;
  margin-bottom: 15px;
}

#pub .content {
  max-width: 750px;
}
#pub .content #word-cloud-container {
   text-align: center;
}
#pub .content #word-cloud-container svg {
  width: 600px;
  max-width: 100%;
}

#contact .content {
  text-align: center;
  font-size: 1.1em;
}
#contact .content .address {
  display: inline-block;
  margin-top: 10px;
  font-size: 0.9em;
  color: #777;
}

footer {
  margin-top: 60px;
  background: #eee;
  font-size: 0.9em;
  text-align: center;
  padding: 20px;
}