tc.css

body {
    font-family: Arial, sans-serif;
    margin: 0;
    padding: 0;
    background-color: #d1d7d8;
}

.container {
    max-width: 400px;
    margin: 50px auto;
    padding: 20px;
    background-color: #7695a2;
    border-radius: 5px;
    box-shadow: 0 2px 5px rgba(0, 0, 0, 0.2);
}

h1 {
    text-align: center;
}

label {
    display: block;
    margin-bottom: 10px;
}

input[type="number"] {
    width: 100%;
    padding: 10px;
    border: 1px solid #ccc;
    border-radius: 3px;
}

button {
    display: block;
    width: 100%;
    padding: 10px;
    background-color: #4CAF50;
    color: #fff;
    border: none;
    border-radius: 3px;
    cursor: pointer;
}

button:hover {
    background-color: #45a049;
}

.result {
    margin-top: 20px;
    border-top: 1px solid #ccc;
    padding-top: 10px;
}

p {
    margin: 5px 0;
}