The code appears to be using SCSS (SASS) variables defined globally outside of any element declarations like so:

1. It's not recommended to define SCSS global vars directly in html files as it conflicts with CSS-in-JS.
   Instead, they should only be used within the specific elements that will affect them.

2. The second line of SCSS contains an additional variable which is potentially confusing since no existing element declaration exists for .el-card__header or ...__body.
   If this was indeed meant to refer to another class (e.g., .el-header, .el-body) you could replace it with actual classes if necessary but also document what it's supposed to do otherwise, especially when working on large projects.

3. In general: Ensure each new style sheet has its own unique ID or selector to avoid name collisions across different scss components and prevent issues such as overlapping styles affecting the current scope. For example, instead of multiple instances using $themeColor:

:-webkit-any-element {
  color: $themeColor !important; /* Safari */
}
/* More similar styles...