.install-viewer-row {
    display: flex;
    flex-flow: column nowrap;
    align-content: center;
    margin: 4px 0;
}

.install-viewer-row ul, 
.install-viewer-row ol {
    margin: 0;
}

.install-viewer-header {
    font-weight: bold;
    font-size: medium;
    margin-bottom: 4px;
}

.install-viewer-button {
    display: flex;
    justify-content: center;
    margin: 4px 0;
}