body  {
    min-height:100%;
    background-image: url("/static/stylesheets/background.jpeg"), linear-gradient(rgba(0,0,0,0.2),rgba(0,0,0,0.3));
    background-blend-mode: overlay;
    background-size:cover
 }
 
 .welcome {
    font-family: 'Segoe UI', 'Tahoma', 'Geneva', 'Verdana', 'sans-serif';
    font-size: 3rem;
    color: aliceblue;
 }
 
 .center {
    height: 100vh;
     display: flex;
     justify-content: center;
     align-items: center
 }​