# `Mailglass.Components.CSS`
[🔗](https://github.com/szTheory/mailglass/blob/v1.2.0/lib/mailglass/components/css.ex#L1)

CSS style-string utilities for email component rendering.

Internal to `Mailglass.Components`. Components build a base inline `style="..."`
string (the email-client invariant part) and merge an optional adopter-supplied
class/style override via `merge_style/2`. No external class-composition library
is used (D-20).

# `merge_style`
*since 0.1.0* 

```elixir
@spec merge_style(String.t(), nil | String.t() | [String.t() | nil]) :: String.t()
```

Merges a base inline style string with an optional override.

Override may be `nil`, a binary, or a list of binaries/nils (nils filtered).

## Examples

    iex> Mailglass.Components.CSS.merge_style("color:red;", nil)
    "color:red;"

    iex> Mailglass.Components.CSS.merge_style("color:red;", "font-size:16px;")
    "color:red; font-size:16px;"

    iex> Mailglass.Components.CSS.merge_style("color:red;", [nil, "font-size:16px;", nil])
    "color:red; font-size:16px;"

---

*Consult [api-reference.md](api-reference.md) for complete listing*