body {
    font-family: Arial, sans-serif;
    background: #f5f6fa;
}

.card {
    width: 300px;
    margin: 60px auto;
    background: #fff;
    padding: 20px;
    border-radius: 6px;
}

input {
    width: 100%;
    padding: 8px;
    margin: 6px 0;
}

button {
    padding: 8px 12px;
    margin-top: 8px;
    cursor: pointer;
}

.container {
    width: 90%;
    margin: 40px auto;
    background: #fff;
    padding: 20px;
    border-radius: 6px;
}

table {
    width: 100%;
    border-collapse: collapse;
}

th, td {
    padding: 10px;
    border-bottom: 1px solid #ddd;
}

th {
    background: #222;
    color: #fff;
}

.danger {
    background: #e74c3c;
    color: white;
    border: none;
}
.history {
    width: 100%;
    margin-top: 10px;
    background: #3498db;
    color: white;
    border: none;
    padding: 8px;
}