body {
    font-family: Arial, sans-serif;
    background-color: #eef2f5;
    margin: 30px;
}

.form-card {
    width: 420px;
    margin: 0 auto;
    padding: 25px;
    background-color: #ffffff;
    border: 2px solid #34495e;
    border-radius: 6px;
}

h2 {
    color: #2c3e50;
    text-align: center;
    margin-top: 0;
    margin-bottom: 20px;
}

.form-group {
    margin-bottom: 15px;
}

label {
    display: block;
    font-weight: bold;
    margin-bottom: 5px;
    color: #333333;
}

input[type="text"], 
input[type="number"] {
    width: 100%;
    padding: 8px;
    box-sizing: border-box;
    border: 1px solid #a6b9ca;
    border-radius: 4px;
    font-size: 14px;
}

input[type="submit"] {
    background-color: #2c3e50;
    color: #ffffff;
    padding: 10px;
    border: none;
    border-radius: 4px;
    width: 100%;
    font-size: 16px;
    font-weight: bold;
    cursor: pointer;
    margin-top: 10px;
}

input[type="submit"]:hover {
    background-color: #1a252f;
}