body {
    font-family: sans-serif;
    margin: 0;
}

header {
    background-color: #f0f0f0;
    padding: 1rem;
    border-bottom: 1px solid #ccc;
}

nav a {
    margin-right: 1rem;
}

main {
    padding: 1rem;
}

.card-container {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
    gap: 1rem;
}

.card {
    border: 1px solid #ccc;
    border-radius: 5px;
    padding: 1rem;
}

form {
    display: grid;
    gap: 0.5rem;
}

label {
    font-weight: bold;
}

input, select, textarea {
    width: 100%;
    padding: 0.5rem;
    border: 1px solid #ccc;
    border-radius: 3px;
}

button {
    background-color: #007bff;
    color: white;
    padding: 0.5rem 1rem;
    border: none;
    border-radius: 3px;
    cursor: pointer;
}