body{
    margin: 0;
    height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    background: 
    linear-gradient(to bottom, rgba(104, 10, 142, 0.7), rgba(25, 50, 100, 1)),
    url("picture/background.jpg");
    background-repeat: no-repeat;
    background-size: cover;    
}

h1{
    color: rgb(158, 158, 158);
    font-size: 50px;
    box-shadow: 3px 3px 10px rgb(9, 9, 9);
}