body {
    font-family: Arial, sans-serif;
    max-width: 900px;
    margin: 40px auto;
    padding: 0 25px;
    line-height: 1.5;
}

h1 {
    border-bottom: 2px solid #333;
    padding-bottom: 10px;
}

textarea {
    width: 100%;
    height: 250px;
    box-sizing: border-box;
    padding: 12px;
    font-family: inherit;
    font-size: 16px;
}

button {
    font-size: 16px;
    padding: 8px 18px;
    cursor: pointer;
}

.results {
    margin-top: 25px;
    padding: 15px 20px;
    background: #f4f4f4;
    border-left: 4px solid #333;
}