body {
    display: none;
}

.background-pages {
    width: 100%;
    height: 100%;
    text-align: center;
    color: #f8f8f8;
    background: url(../img/fire_left.jpg) no-repeat center center;
    background-size: cover;
}

.systems {
    padding-top: 10px;
    display: flex;
    justify-content: center;
    align-items: center;
    text-align: center;
}

th {
    text-align: center;
}