* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    font-family: Arial, sans-serif;
}

body {
    background: linear-gradient(to right, #1e3c72, #2a5298);
    color: #333;
}

header {
    text-align: center;
    padding: 20px;
    background: #ffffff;
    color: #1e3c72;
    font-size: 24px;
    font-weight: bold;
}

.container {
    width: 80%;
    max-width: 900px;
    margin: 30px auto;
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 20px;
}

.card {
    background: white;
    padding: 20px;
    border-radius: 12px;
    box-shadow: 0 6px 15px rgba(0,0,0,0.2);
    text-align: center;
}

.card h2 {
    margin-bottom: 15px;
    color: #1e3c72;
}

input {
    width: 100%;
    padding: 8px;
    margin: 8px 0;
    border-radius: 6px;
    border: 1px solid #ccc;
}

button {
    width: 100%;
    padding: 10px;
    margin-top: 8px;
    border: none;
    border-radius: 6px;
    background-color: #2a5298;
    color: white;
    font-weight: bold;
    cursor: pointer;
}

button:hover {
    background-color: #1e3c72;
}

footer {
    text-align: center;
    padding: 15px;
    background: #ffffff;
    margin-top: 30px;
}