body {
    font-family: Arial, sans-serif;
    display: flex;
    justify-content: center;
    align-items: center;
    height: 100vh;
    margin: 0;
    background-color: #f0f0f0;
}

.container {
    text-align: center;
    background: #fff;
    padding: 20px;
    border-radius: 8px;
    box-shadow: 0 0 10px rgba(0, 0, 0, 0.1);
    width: 80%;
    max-width: 600px;
}

h1 {
    margin-bottom: 20px;
}

textarea {
    width: 100%;
    margin-bottom: 20px;
    resize: none;
    border-radius: 4px;
    border: 1px solid #ccc;
    padding: 10px;
    font-family: monospace;
    font-size: 14px;
    background-color: #fafafa;
    height: 150px;
}

.slider-container {
    position: relative;
    width: 100%;
    max-width: 600px;
    margin-bottom: 20px;
}

.marker-container {
    position: absolute;
    top: -10px;
    left: 0;
    width: 100%;
    height: 8px;
}

.marker {
    position: absolute;
    top: 0;
    width: 2px;
    height: 8px;
    background-color: red;
}

#time-slider {
    width: 100%;
    position: relative;
    z-index: 1;
}

.controls {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 10px;
}

.controls button, .controls input {
    padding: 5px 10px;
    font-size: 14px;
}

#time-display {
    font-size: 16px;
    font-family: monospace;
}