body {
    font-family: 'Arial', sans-serif;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    min-height: 100vh;
    margin: 0;
    background-color: #f4f4f4;
    color: #333;
}

h1 {
    font-size: 24px;
    color: #333;
    margin-bottom: 20px;
}

.controls {
    display: flex;
    flex-direction: column;
    align-items: center;
    padding: 20px;
    background-color: #fff;
    border-radius: 8px;
    box-shadow: 0 4px 8px rgba(0, 0, 0, 0.1);
    margin-bottom: 20px;
}

.controls label {
    margin: 10px 0;
    display: flex;
    align-items: center;
    font-size: 14px;
}

.controls input[type="file"] {
    margin-bottom: 20px;
}

.controls input[type="checkbox"] {
    margin-right: 8px;
}

.controls input[type="range"] {
    margin-left: 10px;
}

#ascii-output {
    white-space: pre;
    line-height: 0.8;
    font-size: 6px;
    padding: 20px;
    background-color: #000;
    color: #fff;
    border-radius: 8px;
    box-shadow: 0 4px 8px rgba(0, 0, 0, 0.1);
    overflow-x: auto;
    max-width: 100%;
}