.centered {
    position: relative;
    top: -50px;
    display: flex;
    justify-content: center;
    align-items: center;
    width: 100%;
    height: 55px;
    background-color: rgb(255, 255, 255);
    color: black;
    border: 1px solid #ccc;
    margin: 50px auto;
}


.developers-section {
    position: relative;
    top: -100px;
    width: 100%;
    max-width: 1200%;
    margin: 0 auto;
    padding: 20px;
}

.developer-card {
    display: flex;
    flex-direction: column;
    align-items: center;
    margin: 10px;
    padding: 20px;
    border: 1px solid #ccc;
    border-radius: 8px;
    box-shadow: 5px 5px 15px rgba(117, 117, 117, 0.7);
    width: 100%;
}

.developer-photo {
    width: 100%;
    max-width: 150px;
    border-radius: 50%;
}

@media (min-width: 768px) {
    .developers-section {
        display: flex;
        justify-content: space-between;
        flex-wrap: wrap;
    }

    .developer-card {
        width: 30%;
    }
}

.observed-div {
    opacity: 0;
    transition: opacity 1s;
}

.observed-div.visible {
    opacity: 1;
}