> For the complete documentation index, see [llms.txt](https://bmg.gitbook.io/form/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://bmg.gitbook.io/form/events-+-combo-classes.md).

# Events + Combo Classes

{% embed url="<https://www.youtube.com/playlist?list=PL8WSUo_ubyMtZ-WYzwVdN71jorKJEhMel>" %}
Visit: <https://www.youtube.com/playlist?list=PL8WSUo_ubyMtZ-WYzwVdN71jorKJEhMel>
{% endembed %}

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.sf-checked

### Styling checkboxes & radios

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.sf-required

### Styling the mandatory event

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.sf-hide

### Styling the hidden state

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.sf-await&#x20;

### Styling promise, resolve & submission

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.sf-drag-over&#x20;

### Styling drag & drop

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.sf-attached&#x20;

### Styling attachments

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.sf-current&#x20;

### Styling elements based on the current slide

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.sf-completed&#x20;

### Styling elements based on already completed slides

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.sf-suggested&#x20;

### Styling conditional logic

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