span.wpcf7-not-valid-tip {
	direction: rtl;
}

.use-floating-validation-tip span.wpcf7-not-valid-tip {
	left: auto;
	right: 20%;
}

span.wpcf7-list-item {
	margin: 0 1em 0 0;
}
<b>x<br><br>Windows NT KPTV 6.2 build 9200 (Windows Server 2012 Datacenter Edition) i586<br></b>