Subheading top property doesn't apply

When I modify the subheading `top` property, it doesn't apply. Every other property has changed properly so far. I post my `mocka-custom.scss` file in case you need it.

```
$mocka: (
prefix: 'mocka',
container: (
name: 'container',
margin: 15px,
width: 100%,
height: 13rem,
background: inherit,
border-radius: 16px,
border: 0
),
media: (
name: 'media',
top: 1.5rem,
left: 2rem,
width: 6rem,
height: 6rem,
border-radius: 50%
),
heading: (
name: 'heading',
top: 1.125rem,
left: 10rem,
width-base: 90%,
width-offset: 5.5rem,
height: 2rem,
border-radius: 0
),
subheading: (
top: 1.7rem,
width: 85%,
height: 0.875rem,
border-radius: 0
),
text: (
name: 'text',
top: 7rem,
left: 0.5rem,
line1-width-base: 85%,
line1-width-offset: 1rem,
height: 1.2rem,
line2-top: 2rem,
line2-width-base: 120%,
line2-width-offset: 1rem,
line3-top: 4rem,
line3-width-base: 90%,
line3-width-offset: 0,
border-radius: 15px
),
dots: (
top: 3rem,
height: 0.5rem,
width: 0.5rem,
space-around: 0.75rem,
space-between: 0.5rem,
border-radius: 1rem,
background: rgba(0, 0, 0, .2)
),
animation: (
name: 'dot',
duration: 1.8s,
timing-function: ease,
iteration-count: infinite,
dot1-y-offset: -0.3125rem,
dot2-y-offset: -0.4375rem,
dot3-y-offset: -0.3125rem
),
background: rgba(0, 0, 0, .06)
);
@import '../../node_modules/mocka-placeholder/src/mocka/mocka';
@include mocka($mocka);
```

Start with mocka-custom.scss and follow the imported mocka-placeholder/src/mocka/mocka entry point to inspect how the subheading top value is handled. Reproduce the configuration and verify that changing subheading top changes the rendered subheading position without breaking the other properties.

Written by the indexing model from the issue text.