.container {
    width: 80%;
    margin: auto;
    text-align: center;
}

table {
    width: 100%;
    border-collapse: collapse;
    margin-bottom: 20px;
}

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

th, td {
    padding: 8px;
    text-align: center;
}

button {
    padding: 10px 20px;
    margin: 10px;
}

.hidden {
    display: none;
}

.modal {
    display: none; /* Hidden by default */
    position: fixed;
    z-index: 1;
    left: 0;
    top: 0;
    width: 100%;
    height: 100%;
    overflow: auto;
    background-color: rgb(0,0,0);
    background-color: rgba(0,0,0,0.4);
    padding-top: 60px;
}

.modal-content {
    background-color: #fefefe;
    margin: 5% auto;
    padding: 20px;
    border: 1px solid #888;
    width: 80%;
}

.close {
    color: #aaa;
    float: right;
    font-size: 28px;
    font-weight: bold;
}

.close:hover,
.close:focus {
    color: black;
    text-decoration: none;
    cursor: pointer;
}

.actions {
    display: flex;
    justify-content: center;
    gap: 10px;
}

.add-btn {
    background-color: green;
    color: white;
    border: none;
    padding: 5px 10px;
    cursor: pointer;
}

.remove-btn {
    background-color: red;
    color: white;
    border: none;
    padding: 5px 10px;
    cursor: pointer;
}