html {
    margin: 0;
    height: 100%;
}
body {
    margin: 0;
    height: 100%;
    background: aliceblue;
    color: #284184;
}
#welcome-screen {
    padding-top: 20%;
    background: #284184;
    width: 100%;
    height: 100%;
    color: black;
}
#welcome-screen .text-center {

}