html,
body {
    height: 100%;
}

.main {
    flex-grow: 1;
}

.gate-page {
    background-color: #f7f7fc;
    text-align: center;
}

.gate-form {
    flex-grow: initial;
    margin: auto;
}

.vnc-loader {
    font-weight: bold;
    animation: vncloading 1s linear infinite;
}

@keyframes vncloading {
    50% { opacity: 0; }
}