A window will open in the top corner. Click Allow, and then click Install. If the automated way doesn't work, <a class="expander" href="%(url)s">try these manual steps</a>.
一个窗口将在上方角落打开。点击允许，然后点击安装。如果自动方式不奏效，<a class="expander" href="%(url)s">尝试手动步骤</a>。