Some selector stays in the <style> after build, and they are not media queries

This selector stays in ouput after running the script:
```
.footer .social-links a {
  margin-left: 10px;
  white-space: nowrap;
}
```

Script: `mkdirp build && inline-email src/email-1/index.html --out build/email1-inlined.html -f --noInlineImages`

```
$ npm -v
6.13.4
$ node -v
v12.14.1
```

```
"dependencies": {
  "inline-email": "^2.0.1"
}
```

Ubuntu 18.04