body {
    text-align: center;
    font-family: Arial, sans-serif;
    margin: 0;
    padding: 0;
    background-color: #f4f4f4;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: flex-start;
    min-height: 100vh;
}

#controls {
    padding: 20px;
    width: 100%;
    background-color: #ddd;
    box-sizing: border-box;
}

#durationSelectors {
    margin-top: 10px;
}

#imageContainer {
    position: relative;
    display: flex;
    justify-content: center;
    align-items: center;
    margin-top: 20px;
    overflow: hidden;
}

#slideshowImage {
    display: block;
    max-width: 95vw;
    max-height: 75vh; /* Adjusted for viewport height minus controls height */
    border: none; /* Border will be set by JavaScript */
}

#startButton, .duration-radio {
    margin: 5px;
    padding: 5px 10px;
    font-size: 16px;
    cursor: pointer;
}

.duration-radio {
    margin: 0 10px;
}

#timerDisplay {
    position: absolute;
    bottom: 5px;
    right: 5px;
    background-color: rgba(0, 0, 0, 0.7);
    color: white;
    padding: 5px;
    border-radius: 5px;
    font-size: 14px;
}