body {
    font-family: Arial, sans-serif;
    background-color: #1f8f08d5;
    text-align: center;
    margin: 0;
    padding: 0;
}

#calendar-container {
    margin: 20px auto;
    max-width: 600px;
}

#calendar-body {
    display: grid;
    grid-template-columns: repeat(6, 100px);
    grid-template-rows: repeat(4, 100px);
    gap: 10px;
    justify-content: center;
}

.calendar-door {
    background-color: #d10a0a;
    color: rgb(255, 255, 255);
    display: flex;
    justify-content: center;
    align-items: center;
    font-size: 24px;
    cursor: pointer;
    border: 2px solid #000;
    border-radius: 5px;
    transition: transform 0.2s ease;
}

.calendar-door:hover {
    transform: scale(1.05);
}

.calendar-door.open {
    background-color: white;
    color: black;
    cursor: default;
}

.hidden-content {
    display: none;
}

.calendar-door.open .hidden-content {
    display: block;
    text-align: center;
    font-size: 14px;
}