.sts-wrapper {
    border: 1px solid #ccc;
    padding: 15px;
    border-radius: 6px;
    max-width: 600px;
    margin: 15px auto;
    background: #fafafa;
    font-family: Arial, sans-serif;
}

.sts-wrapper h3 {
    margin-top: 0;
    color: #333;
}

.sts-wrapper textarea {
    width: 100%;
    padding: 10px;
    margin-bottom: 12px;
    font-size: 14px;
    border: 1px solid #aaa;
    border-radius: 4px;
}

.sts-controls {
    display: flex;
    flex-wrap: wrap;
    gap: 10px;
    align-items: center;
}

.sts-controls label {
    font-size: 14px;
    margin-right: 5px;
}

.sts-controls select,
.sts-controls input[type="range"],
.sts-controls button {
    margin-right: 10px;
}

.sts-controls button {
    cursor: pointer;
}

#sts-message {
    margin-top: 10px;
    font-size: 14px;
}