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

.container {
    text-align: center;
}

h1 {
    color: black;
    margin-bottom: 20px;
}

.instructions {
    color: black;
    font-size: 16px;
    margin-bottom: 30px;
}

.guitar {
    background: #8b6f47;
    width: 500px;
    height: 250px;
    margin: 0 auto;
    border-radius: 50px 50px 30px 30px;
    padding: 30px 40px;
    position: relative;
    border: 2px solid #654321;
}

.strings-container {
    position: relative;
    width: 100%;
    height: 100%;
    display: flex;
    flex-direction: column;
    justify-content: center;
    gap: 20px;
}

.string-row {
    display: flex;
    align-items: center;
    gap: 10px;
    position: relative;
}

.string {
    flex: 1;
    height: 2px;
    background: #c0c0c0;
    border-radius: 1px;
    transition: all 0.05s;
    position: relative;
}

.string::before,
.string::after {
    content: '';
    position: absolute;
    width: 1px;
    height: 50px;
    background: #654321;
    top: -24px;
}

.string::before {
    left: 25%;
}

.string::after {
    right: 25%;
}

.string.active {
    height: 3px;
    background: #ffff00;
}

.key-label {
    font-weight: bold;
    font-size: 14px;
    color: black;
    min-width: 30px;
    background: #d4af37;
    padding: 5px 8px;
    border-radius: 4px;
}