<style>
.container {
  float: left;
  font-size: 20px;
}

.margin_offset {
  margin-inline-start: 10px;
}
</style>
<div class=container>this content<span class=margin_offset>should not wrap</span></div>
<div class=container style="direction: rtl">this content<span class=margin_offset>should not wrap</span></div>