html, body {
    margin: 0;
    padding: 0;
    min-height: 100vh;
    height: 100%;
/* 
    background: linear-gradient(135deg, #c5e2f7 0%, #e6f6f8 30%, #045882 100%);
    background-attachment: fixed;
    background-repeat: no-repeat;
    background-size: cover;
 */
}