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

h1 {
    text-align: center;
}

button {
    margin: 10px;
    padding: 10px;
    background-color: #4CAF50;
    color: white;
    border: none;
    cursor: pointer;
}

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

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

table, th, td {
    border: 1px solid black;
}

th, td {
    padding: 10px;
    text-align: center;
}

.form-popup {
    display: none;
    position: fixed;
    bottom: 0;
    right: 15px;
    border: 3px solid #f1f1f1;
    z-index: 9;
}

.form-container {
    max-width: 300px;
    padding: 10px;
    background-color: white;
}

.form-container input[type=text], .form-container input[type=number] {
    width: 100%;
    padding: 15px;
    margin: 5px 0 22px 0;
    border: none;
    background: #f1f1f1;
}

.form-container input[type=text]:focus, .form-container input[type=number]:focus {
    background-color: #ddd;
    outline: none;
}

.form-container .btn {
    background-color: #4CAF50;
    color: white;
    padding: 16px 20px;
    border: none;
    cursor: pointer;
    width: 100%;
    margin-bottom:10px;
    opacity: 0.8;
}

.form-container .cancel {
    background-color: red;
}

.form-container .btn:hover, .open-button:hover {
    opacity: 1;
}