Style

//style.css
body {
  padding-top: 0px;
  padding-bottom: 0px;
  background-color: #eee;
  background-size: cover;
  background-repeat: no-repeat;
  height: 100%;
  background-image: url('../img/principal2.jpg');
  background-position: center;
}

.h1 {
    text-align: center;
    background-color: #483D8B;
}
.navbar-nav.navbar-center {
    position: absolute;
    left: 50%;
    transform: translatex(-50%);
}
.footer {
    position: absolute;
    bottom: 0;
    width: 100%;
    height: 60px;
    line-height: 60px;
    background-color: #0062cc;
}