body{
    min-height: 100vh;

    background:
    linear-gradient(
        rgba(0, 0, 0, 0.55),
        rgba(94, 137, 255, 0.55)
    ),
    url("videofondo.gif");
    position:absolute;
    background-size: cover;
    background-position: center;
    background-repeat: no-repeat;
    background-attachment: fixed;
    display:flex;
    justify-content: center; 
    align-items: center; 
    margin: 0; 
     
}


.card{
    background: rgba(255,255,255,0.95);
    border-radius: 15px;
    backdrop-filter: blur(5px);
}