-`verticalMargin` - vertical gap size (default: `20`). Can be:
- an integer (px)
- a string (ex: '2em', '20px', '2rem')
-`width` - amount of columns (default: `12`)
-`width` - amount of columns (default: `12`). Setting non-default value must be supported by equivalent change in CSS, [see docs here](https://github.com/troolee/gridstack.js#change-grid-width).
## Grid attributes
-`data-gs-animate` - turns animation on
-`data-gs-width` - amount of columns
-`data-gs-width` - amount of columns. Setting non-default value must be supported by equivalent change in CSS, [see docs here](https://github.com/troolee/gridstack.js#change-grid-width).
-`data-gs-height` - maximum rows amount. Default is `0` which means no maximum rows.
-`data-gs-current-height` - current rows amount. Set by the library only. Can be used by the CSS rules.
