.wrap {
  display: table;
  width: 100%;
  height: 100%; /* For at least Firefox */
  min-height: 100%;
}

.wrap-inner {
  display: table-cell;
  vertical-align: top;
}

.cover-container {
  margin-right: auto;
  margin-left: auto;
}

.content-container {
  height: 100%;
  min-height: 100%;
}

.wrap:before {
  content: ' ';
  display: block;
  position: absolute;
  left: 0;
  top: 0;
  width: 100%;
  height: 100%;
  z-index: 1;
  opacity: 0.4;
  background: url(img/cluster.png);
  background-repeat: no-repeat;
  background-position: 50% 0;
  -ms-background-size: cover;
  -o-background-size: cover;
  -moz-background-size: cover;
  -webkit-background-size: cover;
  background-size: cover;
  -webkit-box-shadow: inset 0 0 100px rgba(0,0,0,.5);
  box-shadow: inset 0 0 100px rgba(0,0,0,.5);
}

.socrat-title-container {
  position: relative;
  top: 100px;
  text-align: center;
  z-index: 2;
  background: rgba(238, 238, 238, 0.8);
}

.jumbotron-container {
  color: #2c3e50;
}

.socr-start {
  margin: 0 100px;
  color: #2c3e50;
}

.footer-container {
  padding-top: 15px;
  text-align: center;
}

.footer-container a, p {
  color: #34495e;
}

.footer-container a:hover {
  color: #1abc9c;
}