body {
    font-family: Arial, sans-serif;
    background-color: #f2f2f2;
    padding: 20px;
}

h1 {
    color: #333;
    text-align: center;
}

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

input {
    width: 100%;
    padding: 5px;
    margin-top: 5px;
    border: 1px solid #ccc;
    border-radius: 3px;
    -webkit-appearance: none;
    -moz-appearance: none;
    appearance: none;
}

button {
    display: block;
    margin: 0 auto;
    padding: 10px 20px;
    background-color: #333;
    color: #fff;
    border: none;
    border-radius: 5px;
    cursor: pointer;
}

#sonuc {
    margin-top: 20px;
    text-align: center;
    font-weight: bold;
    font-size: 18px;
}