html,
body {
    height: 100%;
}

.parent-container {
    height: 100%;
    background: radial-gradient(circle, #444857, #2c303a);
    display: flex;
    justify-content: center;
    align-items: center;
}

.logo {
    text-align: center;
}

.logo-text {
    color: #fff;
    font-size: 52px;
    text-align: center;
}