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# CSSgram
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Instagram filter library in Sass and CSS.
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## What is This?
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Simply put, CSSgram is a library for editing your images with Instagram-like filters directly in CSS. What we’re doing here is adding filters to the images as well as applying color and/or gradient overlays via various blending techniques to mimic these effects. This means *less manual image processing* and more fun filter effects on the web!
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We are using pseudo-elements (i.e. `::before` and `::after`) to create the filter effects, so you must apply these filters on a containing element (i.e. not a *replaced element* like `<img>`). The recommendation is to wrap your images in a `<figure>` tag. More about the tag [here](https://developer.mozilla.org/en-US/docs/Web/HTML/Element/figure).
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## Browser Support
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This library uses [CSS Filters](https://developer.mozilla.org/en-US/docs/Web/CSS/filter) and [CSS Blend Modes](https://css-tricks.com/basics-css-blend-modes/). These features are supported in the following browsers:
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| <img src="http://i.imgur.com/dJC1GUv.png" width="48px" height="48px" alt="Chrome logo"> | <img src="http://i.imgur.com/o1m5RcQ.png" width="48px" height="48px" alt="Firefox logo"> | <img src="http://i.imgur.com/8h3iz5H.png" width="48px" height="48px" alt="Internet Explorer logo"> | <img src="http://i.imgur.com/iQV4nmJ.png" width="48px" height="48px" alt="Opera logo"> | <img src="http://i.imgur.com/j3tgNKJ.png" width="48px" height="48px" alt="Safari logo"> |
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|:---:|:---:|:---:|:---:|:---:|
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| 43+ ✔ | 38+ ✔ | Nope ✘ | 32+ ✔ | 8+ ✔ |
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For more information, check on [Can I Use](http://caniuse.com/).
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## Usage
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**There are currently 2 ways to consume this library:**
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### Use CSS classes
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When using CSS classes, you can simply add the class with the filter name to the element containing your image.
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1. Include the CDN link in your `<head>` tag: `<link rel="stylesheet" href="https://cssgram-cssgram.netdna-ssl.com/cssgram.min.css">`
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* Alternatively, you can [download the CSSgram library](https://raw.githubusercontent.com/una/CSSgram/master/source/css/cssgram.min.css) locally and link to the it within your project: `<link rel="stylesheet" href="css/vendor/cssgram.min.css">`
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* Add a class to your image element with the name of the filter you would like to use
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For example:
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```
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<!-- HTML -->
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<figure class="aden">
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<img src="../img.png">
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</figure>
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```
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Alternatively, you can just download and link to any individual css file (e.g. `<link rel="stylesheet" href="css/vendor/aden.min.css">`), if you’re just using one of the styles.
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### Available Classes
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_For use in HTML markup:_
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* Aden: `class="aden"`
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* Reyes: `class="reyes"`
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* Perpetua: `class="perpetua"`
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* Inkwell: `class="inkwell"`
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* Toaster: `class="toaster"`
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* Walden: `class="walden"`
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* Hudson: `class="hudson"`
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* Gingham: `class="gingham"`
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* Mayfair: `class="mayfair"`
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* Lo-fi: `class="lofi"`
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* X-Pro II: `class="xpro2"`
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* 1977: `class="_1977"`
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* Brooklyn: `class="brooklyn"`
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* Nashville: `class="nashville"`
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* * *
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### Use Sass `@extend`
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If you use custom naming in your CSS architecture, you can add the `.scss` files for the provided styles within your project and then `@extend` the filter effects within your style definitions. If you think extends are stupid, I will fight you 😊.
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1. [Download the `scss/` folder contents](https://github.com/una/CSSgram/tree/master/source/scss)
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* Include a link to `scss/cssgram.scss` via an `@import` statement in your Sass manifest file (i.e. `main.scss`). It may look like: `@import 'vendor/cssgram'`
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* Extend the placeholder selector (e.g. `@extend %aden`) in your element.
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For example:
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```
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<!-- HTML -->
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<figure class="viz--beautiful">
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<img src="../img.png">
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</figure>
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```
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```
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// Sass
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.viz--beautiful {
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@extend %aden;
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}
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```
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Alternatively, you can just download and link any individual `.scss` file in your Sass manifest (i.e. `scss/aden.scss`), if you're just using one of the styles.
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### Available Placeholders
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_For use in Sass stylesheets:_
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* Aden: `@extend %aden`
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* Reyes: `@extend %reyes`
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* Perpetua: `@extend %perpetua`
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* Inkwell: `@extend %inkwell`
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* Toaster: `@extend %toaster`
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* Walden: `@extend %walden`
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* Hudson: `@extend %hudson`
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* Gingham: `@extend %gingham`
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* Mayfair: `@extend %mayfair`
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* Lo-fi: `@extend %lofi`
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* X-Pro II: `@extend %xpro2`
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* 1977: `@extend %_1977`
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* Brooklyn: `@extend %brooklyn`
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* Nashville: `@extend %nashville`
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## Contributing
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Either:
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1. Create an [issue](https://github.com/una/CSSgram/issues)
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Or:
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1. Fork this repository
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2. Clone the fork onto your system
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3. `npm install` dependencies (must have Node installed)
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4. Run `gulp` to compile CSS and the test site
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5. Make changes and check the test site with your changes (see file structure outline below)
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6. Submit a PR referencing the issue with a smile :smile:
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If you’d like to contribute, the following filters are yet to be added:
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- [ ] [Charmes](https://github.com/una/CSSgram/issues/22)
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- [ ] [Stinsen](https://github.com/una/CSSgram/issues/21)
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- [ ] [Kelvin](https://github.com/una/CSSgram/issues/20)
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- [ ] [Sutro](https://github.com/una/CSSgram/issues/19)
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- [ ] [Hefe](https://github.com/una/CSSgram/issues/17)
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- [ ] [Valencia](https://github.com/una/CSSgram/issues/16)
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- [ ] [Rise](https://github.com/una/CSSgram/issues/15)
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- [ ] [Sierra](https://github.com/una/CSSgram/issues/14)
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- [ ] [Amaro](https://github.com/una/CSSgram/issues/13)
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- [ ] [Crema](https://github.com/una/CSSgram/issues/12)
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Filters are really fun to create! Reference photos created by [Miles Croxford](https://twitter.com/milescroxford) can be found [here](https://instagram.com/cssgram/).
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## File Structure Outline
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- `source/css/cssgram.css` contains each of the CSS classes you can apply to your `<img>` to give it the filter. You should use `source/css/cssgram.min.css` for production if you want access to all of the library
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- `source/scss/` contains the source files for individual classes and placeholder selectors you can use to extend CSS classes in Sass
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- `site/` is the public facing website
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- `site/test` is how you test filters if you're developing, remember to change `is_done` for the filter you're creating in `site/test/index.twig` whilst gulp is running.
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Note: this will also have mixin options and a PostCSS Component.
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