My answer of
<style type='text/sass'>
$x: 1;
@while $x <= 10 {
.text-#{$x} { font-size: 5px * $x; }
$x: $x + 1;
}
</style>
<p class="text-1">Hello</p>
<p class="text-2">Hello</p>
<p class="text-3">Hello</p>
<p class="text-4">Hello</p>
<p class="text-5">Hello</p>
<p class="text-6">Hello</p>
<p class="text-7">Hello</p>
<p class="text-8">Hello</p>
<p class="text-9">Hello</p>
<p class="text-10">Hello</p>
does not pass all tests rather it tells me Your .text-1 class should have a font-size of 5px. The solution should work shouldn’t it?