/* Add a black background color to the top navigation */
.topnav {
  background-color: #333;
  overflow: hidden;
  direction: rtl;
}

/* Style the links inside the navigation bar */
.topnav a {
  float: left;
  color: #f2f2f2;
  text-align: center;
  padding: 14px 16px;
  text-decoration: none;
  font-size: 17px;
}

/* Change the color of links on hover */
.topnav a:hover {
  background-color: #ddd;
  color: black;
}

/* Add a color to the active/current link */
.topnav a.active {
  background-color: #4CAF50;
  color: white;
}

.center-screen {
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  text-align: center;
  min-height: 70vh;
}
.vis-timeline {
  background-color: #2c3b4e;
  font-family: "Tahoma";
  font-size:small;
  border-color: #2c3b4e;
}
.vis-item {
  background-color: green;
  color: white;
  border-color: yellow;
}
.vis-time-axis .vis-text {
  color: white;
}

.vis-time-axis .vis-grid.vis-minor {
  border-color: #2c3b4e;
}
.vis-panel.vis-center {
  border-color: white;
}
body {
  background-color: #2c3b4e;
}