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A collection of CSS3 powered hover effects to be applied to links, buttons, logos, SVG, featured images and so on. Easily apply to your own elements, modify or just use for inspiration. Available in CSS, Sass, and LESS.
Hover.css can be used in a number of ways; either copy and paste the effect you'd like to use in your own stylesheet or reference the stylesheet. Then just add the class name of the effect to the element you'd like it applied to.
If you plan on only using one or several effects, it's better practice to copy and paste an effect into your own stylesheet, so a user doesn't have to download `css/hover.css` in its entirety.
**Note**: As of `2.0.0` all Hover.css class names are prefixed with `hvr-` to prevent conflicts with other libraries/stylesheets. If using Sass/LESS, this can easily be changed using the `$nameSpace`/`@nameSpace` variable in `scss/_options.scss` or `less/_options.less`.
Should you wish to override this behavior, either remove the above CSS from Hover.css or change the `display` property for the element. Be sure to declare the override after the Hover.css declarations so the CSS cascade will take effect. Alternatively, if you are using the Sass/LESS version of Hover.css, you can remove/comment out the `forceBlockLevel()` mixin found in `scss/_hacks.scss` or `less/_hacks.less`.
In the above code, we have given a link element a class of `hvr-icon-forward` which will make an icon move forward when the link is hovered over. The icon itself is given a class of `hvr-icon` to let Hover.css know that this is the icon we want to animate. In this example, our icon is from FontAwesome, which we've loaded into the `<head></head>` of our web page as per FontAwesome's instructions, like so:
Note: As of Hover.css v2.3.0 you can use any method you like for adding icons (previously, only FontAwesome was supported out-of-the-box.) For example, you could use another icon library or instead, use an image like so:
Here, the image will act as the icon because it has the `hvr-icon` class applied to it, and when hovered over, the icon will spin as defined by the `hvr-icon-spin` class on the parent element.
Position of the icon is entirely in your control. You could place it before the text, like so:
Many Hover.css effects rely on CSS3 features such as transitions, animations, transforms and pseudo-elements, for that reason, effects may not fully work in older browsers.
- [Transitions](http://caniuse.com/#search=transitions) and [Animations](http://caniuse.com/#search=animations) - not supported below Internet Explorer 10
- [Transforms](http://caniuse.com/#search=transforms) - not supported below Internet Explorer 9
Aside from the above mentioned browsers, Hover.css is supported across all major browsers. Please see [caniuse.com](http://caniuse.com/) for full support for many web technologies and test your webpages accordingly. It is recommended to apply fallback effects for older browsers, using CSS supported by those browsers or a feature testing library such as [Modernizr](http://modernizr.com/).
Grunt is non-essential but can speed up development. With [Grunt installed](http://gruntjs.com/getting-started), run `grunt` from the command line to set up a development server accessed at [http://127.0.0.1:8000/](http://127.0.0.1:8000/) or your local IP for network testing. With Grunt running, Sass or LESS will be preprocessed (depending on whether you work out of the `scss` or `less` folder) and CSS files will be minified.
**Note:** Originally Grunt was set up to autoprefix CSS properties but to make the project as accessible as possible, this is no longer the case. The `prefixed(property, value)` Sass/LESS mixin should be used for browser prefixing instead. See [Using Sass/LESS for Development](#using-sassless-for-development) and [Using LESS for Development].
Sass/LESS are non-essential but can speed up development. Preprocess Sass/LESS with your favourite software or the environment provided via [Grunt](#using-grunt-for-development).
Sass/LESS is used in the Hover.css project to separate various CSS into specific files. Each effect is within its own file in the `effects` directory. Hover.css also uses the following `.scss` and `.less` files:
Contains hacks (undesirable but usually necessary lines of code) applied to certain effects. [Hacks explained here](https://github.com/IanLunn/Hover/wiki/Hacks-Explained).
Contains `prefixed` and `keyframes` mixins that apply the necessary prefixes you specify in `_options.scss` / `_options.less` to properties and keyframes.
Contains default options, various effect options and the browser prefixes you'd like to use with the `prefixed` mixin. By default, only the `-webkit-` prefix is set to `true` (due to most browsers not requiring prefixes now).
As of `2.0.0`, `_options` also includes a `$nameSpace` / `@nameSpace` option which allows you to change the name all classes are prefixed with. The default namespace is `hvr`.
The `$includeClasses` / `@includeClasses` option by default is set to `true` and will generate all Hover.css effects under their own class names, `hvr-grow` for example. Should you wish to add the properties that make up Hover.css effects to your own class names, set this option to `false`.
Hover.css is made available under a free personal/open source or paid commercial licenses depending on your requirements. To compare licenses please visit the [Ian Lunn Design Limited Store](https://ianlunn.co.uk/store/licenses/) and [purchase a commercial license here](https://ianlunn.co.uk/store/hover-css/).
Should your application enable end users to produce separate applications that incorporate Ian Lunn Design Limited's software, for example, a development toolkit, library, or application builder, you must obtain an OEM Commercial License. Please [contact us](https://ianlunn.co.uk/contact/) for more information about the OEM Commercial License.
### MIT License (Pre v2.2.0 / 24th March 2017)
Hover.css was previously made available under a MIT License for both commercial and non-commercial use. Anyone that obtained a MIT license for commercial use before v2.2.0 (24th March 2017) may continue to use Hover.css versions prior to v2.2.0 under that same license.
If you'd like to upgrade to v2.2.0 or above, or would like to simply show your support for Hover.css (we'd much appreciate it!), please purchase an up-to-date commercial license. [Purchase a Commercial License](https://ianlunn.co.uk/store/hover-css/).
