style.css

body {
    background: linear-gradient(to bottom, #333333, #000000);
	color: #ffffff;
    font-family: Arial, Helvetica, sans-serif;
	text-align: center;
	padding-top: 0%;
	padding-bottom: 100%;
}

h1 {
    color: white;
    text-align: center;
    margin-top: 50px;
}

table {
    margin: auto;
    border-collapse: collapse;
    margin-top: 50px;
}

thead {
    background-color: #CEE3F6;
    color: black;
}

th, td {
    padding: 10px;
    text-align: center;
    border: 1px solid white;
}
tr:nth-child(even) {
  background: #848484;
}

.online {
    display: inline-block;
    width: 10px;
    height: 10px;
    border-radius: 5px;
    background-color: green;
}

.offline {
    display: inline-block;
    width: 10px;
    height: 10px;
    border-radius: 5px;
    background-color: red;
}

a {
    color: white;
    text-decoration: none;
}