styles.css

html, body {

    margin: 0;
    background: linear-gradient(45deg, rgb(73, 160, 157), rgb(95, 44, 130));
    font-family: sans-serif;
    font-weight: 100;
}

.container {
    padding-top: 100px;
    padding-bottom: 100px;
    width: 100%;
}

h1 {
    color: #fff;
    text-align: center;
    margin-bottom: 20px;
}

.table-wrapper {
    height: 100%;
}

table {
    width: 800px;
    border-collapse: collapse;
    overflow: hidden;
    box-shadow: 0 0 20px rgba(0,0,0,0.1);
}

th, td {
    padding: 15px;
    background-color: rgb(0 0 0 / 48%);
    color: #fff;
}

a {
    color: #69b1ff;
}

a:hover {
    color: #1a7ce5;
}

th {
    text-align: left;
}

thead th {
    background-color: #55608f;
}

tbody tr:hover {
    background-color: rgba(255,255,255,0.3);
}

tbody td {
    position: relative;
}

tbody td:hover:before {
    content: "";
    position: absolute;
    left: 0;
    right: 0;
    top: -9999px;
    bottom: -9999px;
    background-color: rgba(255,255,255,0.2);
    z-index: -1;
}

.strike {
    text-decoration: line-through;
    background-color: #7b5858;
}

.text-secondary {
    color: #6c757d !important;
}

.text-danger {
    color: #dc3545 !important;
}

button.btn {
    padding: 5px 10px;
    font-size: 12px;
}

.context-menu {
    display: none;
    position: absolute;
    background-color: #fff;
    border: 1px solid #ccc;
    z-index: 1000;
    padding-top: 10px;
    padding-left: 10px;
    padding-right: 10px;
    top: -30px;
    left: -30px;
}

#rowMenu {
    margin-bottom: 0px;
}

.context-menu .submenu ul {
    display: none;
    position: absolute;
    top: 0;
    left: 100%;
    margin: 0;
    padding: 0;
    border: none;
    box-shadow: 0 0 10px rgba(0,0,0,0.5);
}

.context-menu .submenu:hover ul {
    display: block;
}

.context-menu li:hover {
    background-color: #e9e9e9;
}

@media (max-width: 600px) {
    table {
        width: 100%;
    }
}