div#contenedor-grid {
    margin: auto;
    margin-top: 20px;
    width: 900px;
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 15px;
    border: 1px outset black;
    padding: 10px;
    background-color: #ffffff36;
    box-shadow: 0 2px 4px black;
}

div.item-grid {
    height: 150px;
    border: 1px outset black;
    background-color: #ffffff36;
    box-shadow: 0 2px 4px black;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 24px;
    transition: all 0.3s ease;
}

div.item-grid:hover {
    background-color: #8080809c;
    border: 1px outset white;
    box-shadow: 0 2px 4px white;
    transform: scale(1.05);
}