html, body {
    margin: 0;
    height: 100%;
    width: 100%;
    font-family: 'Playfair Display', serif;
    background-color: #000;
    display: flex;
    align-items: center;
    justify-content: center;
    color: #fff;
}

.button-container {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    grid-template-rows: repeat(auto-fit, minmax(100px, 1fr));
    gap: 0;
    height: 100vh;
    width: 100vw;
    padding: 0;
    margin: 0;
    box-sizing: border-box;
}

hr {
    width: 90%;
}

.button {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    background-color: #000;
    font-family: 'Playfair Display', serif;
    color: #fff;
    font-size: 2em;
    border: none;
    cursor: pointer;
    width: 100%;
    height: 100%;
    text-align: center;
    padding: 0;
    transition: background-color 0.3s, color 0.3s;
    box-sizing: border-box;
}

.button:hover {
    background-color: #fff;
    color: #000;
}

.button .subtitle {
    font-size: 0.8em;
    color: inherit;
    margin-top: 0.2em;
    font-style: italic;
}

.button:focus {
    outline: none;
}

.banner {
    display: flex;
    flex-direction: column;
    text-align: center;
    color: #fff;
    margin: 0;
}

.banner-title {
    margin: 20px;
    font-size: 2em;
    font-weight: 700;
}

.banner-subtitle {
    font-size: 1.2em;
    line-height: 2;
    margin: 10px;
}

.banner-bottom {
    font-size: 1em;
    margin: 20px;
    line-height: 2;
    font-style: bold;
}

.banner-image img {
    width: 15%;
    height: auto;
    margin: 24px;
}

.hidden {
    display: none;
}

#pie-chart {
    margin-top: 20px;
    width: 70%;
    margin-left: auto;
    margin-right: auto;
}

#pie-chart-title {
    text-align: center;
    font-size: 1.2em;
    font-style: italic;
    margin: 30px;
    color: #fff;
}

@media (max-width: 600px) {
    .button {
        font-size: 1.5em;
    }
    
    .button .subtitle {
        font-size: 0.5em;
    }
}