body {
    background-color: #000000; /* This is black color */
    color: #FFFFFF; /* This is white color */
    font-family: 'Josefin Sans', sans-serif;
}
.jumbotron {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    display: flex;
    justify-content: center;
    align-items: center;
    flex-direction: column;
    background-image: url('https://d2gg9evh47fn9z.cloudfront.net/1600px_COLOURBOX38269708.jpg');
    background-size: cover;
}
.card {
    background-color: rgba(0, 0, 0, 0.8); /* This is white color with some transparency */
    padding: 20px;
    border-radius: 15px;
    text-align: center;
}
.jumbotron h1 {
    font-size: 2em;
}
.jumbotron p {
    font-size: 1em;
}
.jumbotron a {
    color: #ffffff; /* This is black color */
    text-decoration: none;
    padding: 10px;
    margin: 10px;
    border: 1px solid #ffffff;
}
.jumbotron a:hover {
    background-color: #ffffff;
    color: #000000; /* This is white color */
}
@media (max-width: 600px) {
    .jumbotron h1 {
        font-size: 1.5em;
    }
    .jumbotron p {
        font-size: 0.75em;
    }
}