<li class="uip">
<span class="leftinfo"><i class="fa fa-calendar-o fa-lg" aria-hidden="true"></i> {lang="joined"}:</span>
<span class="rightinfo">{datetime="$comment->author()->joined" dateonly="true"}</span>
</li>
В custom.css
.uip {
padding: 5px;
display: inline-block;
width: 98%;
color: #1b1b1b;
padding: 1px 10px;
margin-top: -2px;
border-radius: 5px;
border-width: 1px 0 1px 0;
border-style: solid;
border-color: #dcd8d8;
background: #f5f5f5;
border: 1px #dcdcdc solid;
box-shadow: inset rgb(220, 220, 220) 0px 1px 5px, rgb(220, 220, 220) 0px 0px 0px, rgb(220, 220, 220) 0px 0px 1px 0px;
}
.leftinfo {
font-size: 11px;
float: left;
text-align: left;
margin-right: 3px;
margin-left: 0;
min-width: 60px;
width: auto !important;
}
.rightinfo {
float: right;
color: #1b1b1b;
font-size: 11px;
}