.yec-calculator {
    max-width: 400px;
    margin: 20px auto;
    padding: 20px;
    border: 1px solid #ddd;
    border-radius: 5px;
    text-align: center;
}

.yec-calculator label {
    font-weight: bold;
    display: block;
    margin-top: 10px;
}

.yec-calculator input[type="url"],
.yec-calculator input[type="number"] {
    width: 100%;
    padding: 8px;
    margin: 5px 0 10px 0;
}

.yec-calculator input[type="submit"] {
    background-color: #0073aa;
    color: white;
    padding: 10px 20px;
    border: none;
    border-radius: 5px;
    cursor: pointer;
}

.yec-calculator input[type="submit"]:hover {
    background-color: #005d8f;
}