body {
    background-color: #ecf0f1;
}

/* .w3-flat-peter-river { */
.bg-text-blue {
    color: #fff;
    background-color: #3498db;
}

/* .w3-flat-clouds { */
.bg-text-silver {
    color: #000;
    background-color: #ecf0f1;
    height: 100vh;
}