table, td, th {
    border: 1px solid black;
}
th {
    text-align: center;
}
.td-btn {
    text-align: center;
    margin: 0;
}
.td-btn > a > div {
    width: 100%;
    height: 100%;
    padding: 0;
    margin: 0;
}

.table-container-b {
    overflow-y: auto;
}

.table-btn {
    transition: background-color 1s;
}

.table-btn:hover {
    background-color: rgb(182, 0, 0);
}