Moving Topic Edit Logs below Signature

Hello,
URL: http://yourtechadvisors.com/forums/topic/testing-safe-to-ignore/
I am using this plugin to add signatures: https://wordpress.org/plugins/gd-bbpress-tools/

I would like the Revision information to align under the Signiture. I am currently using this CSS.

.topic.type-topic.status-publish > .bbp-reply-content,
.reply.type-reply.status-publish > .bbp-reply-content{
    display: -webkit-box;
    display: -moz-box;
    display: box;

    -webkit-box-orient: vertical;
    -moz-box-orient: vertical;
    box-orient: vertical;
}

.topic.type-topic.status-publish > .bbp-reply-content > .bbp-topic-revision-log,
.reply.type-reply.status-publish > .bbp-reply-content > .bbp-reply-revision-log{
	-webkit-box-ordinal-group: 2;
    -moz-box-ordinal-group: 2;
    box-ordinal-group: 2;
}

.topic.type-topic.status-publish > .bbp-reply-content > .bbp-signature,
.reply.type-reply.status-publish > .bbp-reply-content > .bbp-signature{
  -webkit-box-ordinal-group: 1;
    -moz-box-ordinal-group: 1;
    box-ordinal-group: 1;
}

It is working fine in Firefox, but not in Internet Explorer and Safari on apple devices such as IPhones. Can you please take a look for me?

Thanks.