.all {
    display: flex;
    flex-direction: column;
    background-color: #dee2e6;
    text-align: center;
}

.upper {
    display: grid;
    background-color: #dee2e6;
    width: 90%;
    margin: 0 auto;
    grid-template-columns: repeat(auto-fit, minmax(30rem, 1fr));
    box-sizing: border-box;
}

.lower {
    background-color: #dee2e6;
    text-align: center;
    padding: 1rem;
}

.gridpart {
    background-color: #dee2e6;
    padding: 1rem;
    width: 100%;
}

.credits {
    margin: 0.5% 0;
}

.footer-line {
    border: none;
    border-top: 2px solid black;
    margin: 1rem auto;
    width: 80%;
}

.gridpart > p, b {
    font-size: 1.5rem;
}