CodePen posts custom styling to fit ~my brand~

codepen-posts.scss

@import url("https://rsms.me/inter/inter.css");
$color--primary: #030303;
$color--accent: #FF0080;
$color--background: #fefefe;
@mixin inter {
  font-family: "Inter", sans-serif;
  @supports (font-variation-settings: normal) {
    font-family: "Inter var", sans-serif;
  }
}
@mixin border-button {
  @include inter;
  background-color: transparent;
    border: 2px solid $color--primary;
    color: $color--primary;
  border-radius: 0;
  &:hover, &:active, &:focus {
    background-color: $color--primary;
    color: $color--background;
    svg {
      fill:  $color--background;
    }
  }
}
article.post {
  @include inter;
  background: $color--background;
  .post-title {
    @include inter;
    font-weight: 900;
  }
  .blog-post {
    background: $color--background;
  }
  .post-content {
    background: $color--background;
  }
}
.post-header {
  color: $color--primary;
  background: $color--background;
  .date-block {
    @include border-button;
  }
  .big-hearter {
    border-radius: 0;
    background-color: $color--accent;
    border: 2px solid $color--accent;
    &:hover {
      background-color: transparent;
      svg {
        fill: $color--accent;
      }
    }
  }
  .content-author {
    border-bottom-color: $color--primary;
    .author-link {
      color: $color--primary;
    }
  }
}
.follow-user-button {
  @include border-button;
  text-transform: uppercase;
  font-weight: 730 !important;
}
.post-body {
  font-size: 18px;
  letter-spacing: -0.01em;
  color: $color--primary;

  h2,
  h3,
  h4 {
    @include inter;
    font-weight: 730;
  }
  h4 {
    letter-spacing: 0.1em;
  }
  a {
    color: inherit;
  }
}