# basic selectors

{% tabs %}
{% tab title="🗣 討論" %}
* [Which characters are valid in CSS class names/selectors?](https://stackoverflow.com/questions/448981/which-characters-are-valid-in-css-class-names-selectors)
{% endtab %}
{% endtabs %}

| selector | notes                    |
| -------- | ------------------------ |
| tag      | tag selecrtor            |
| .class   | class selecotr           |
| #id      | id selector              |
| \*       | all (universal) selector |
