.main {
  background: #727272;
}

html, body, .container {
font-family: 'Roboto', sans-serif;
    height: 100%;
}
.container {
    display: table;
    vertical-align: middle;
}
.vertical-center-row {
    display: table-cell;
    vertical-align: middle;
}

.header {
text-align: center;
}