footer {
    background: rgb(2, 0, 36);
    background: linear-gradient(
        0deg,
        rgba(2, 0, 36, 1) 0%,
        rgba(0, 0, 0, 1) 100%
    );
    color: white;
    display: flex;
    flex-direction: column;
    text-align: center;
    align-items: center;
    padding: 0;
    margin: 0;
    box-sizing: border-box;
    margin-top: 15px;
}

footer hr {
    width: 50%;
    background-color: rgb(100, 100, 100);
    border: 0;
    height: 1px;
}

footer p {
    margin: 20px 0;
}

#credits {
    margin: 20px 0;
    color: white;
    font-size: 16px;
}

#credits:hover {
    color: rgb(216, 216, 216);
}

.photos-container-footer img {
    filter: invert(1);
}

.photos-container-footer {
    display: flex;
    justify-content: center;
    align-items: center;
    width: 200px;
    margin: 20px auto;
}

.photos-container-footer img {
    display: block;
    padding: 0 10px;
    max-width: 100%;
    height: auto;
    margin: 0 auto;
}