body {
  padding-top: 70px;
  /** Always show scroll-bars so that body does not move horizontally when we change tab */
  overflow-y:scroll;
}

.footer {
  margin-top: 30px;
  background-color: #f5f5f5;
  color: black;
}

.references li {
  margin-bottom: 5px;
}

#lectures .panel-heading {
  font-weight: bold;
}

.title-talk {
  font-style: italic;
  margin-bottom: 0.5px;
}

.presentation {
  text-align: justify;
}