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Fly-in letters - no js

See the Code - See it Full Page - See Details Letters fly in, each from a random direction and distance. This only happens once on page load, so if you want to see it again, you gotta hit refresh :)...

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A design pattern for making interesting CSS animations in under 10 minutes

See the Code - See it Full Page - See Details See blog post here: http://themarklee.com/2013/11/03/design-pattern-making-interesting-css-animations-codepen-10-minutes/ :) This Pen uses: Haml, SCSS,...

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A super-simple geolocation example

See the Code - See it Full Page - See Details See blog post here for more info: http://themarklee.com/2013/10/27/super-simple-geolocation/ This Pen uses: HTML, CSS, JavaScript, and

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Simple image crossfade slideshow - CSS animation

See the Code - See it Full Page - See Details A simple CSS animation, with a staggered start time for each image. A nice little algorithm for calculating the animation timing percentages can be found...

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Full-screen animated gif background

See the Code - See it Full Page - See Details This Pen uses: HTML, CSS, JavaScript, and

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A simple DIY responsive slideshow made with HTML5, CSS3, and JavaScript...

See the Code - See it Full Page - See Details Not the most robust slideshow ever (it's meant to be a pretty simple example), but one nice thing about this approach is it uses JS for class-switching...

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Layering CSS Gradients

See the Code - See it Full Page - See Details Used to show how multiple gradient backgrounds are combined to create a pattern. See: http://themarklee.com/2013/11/29/get-started-css-gradients/ Also see...

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Multiple Gradients for Fancy Patterns

See the Code - See it Full Page - See Details Blog post: http://themarklee.com/2013/11/29/get-started-css-gradients/ Also see the the layering of backgrounds here:...

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Building Interactive Maps with Leaflet & the Geo​location API

See the Code - See it Full Page - See Details See blog post here for more info: http://themarklee.com/2013/11/16/geolocation-part-ii-building-interactive-maps-leaflet/ This Pen uses: HTML, CSS,...

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A simple DIY responsive slideshow made with HTML5, CSS3, and JavaScript...

See the Code - See it Full Page - See Details Also supports swiping on touch devices. A vanilla JS (no-jQuery) version can be found here: http://codepen.io/leemark/pen/DLgbr Step-by-step blog post...

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A simple crossfading slideshow made with CSS

See the Code - See it Full Page - See Details Blog post here: http://themarklee.com/2013/10/16/simple-crossfading-slideshow-css/ This Pen uses: HTML, CSS, JavaScript, and

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Repeating patterns with :nth-child

See the Code - See it Full Page - See Details Trying to wrap my head around :nth-child. Also blogged in more detail here: http://themarklee.com/2013/09/29/repeating-patterns-nth-child/ This Pen uses:...

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A better simple slideshow

See the Code - See it Full Page - See Details This is another fairly basic slideshow, written in javascript, html, and css. This is a dual-purpose project, it’s meant (1) to be something you can drop...

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Fly-in letters - no js

See the Code - See it Full Page - See Details Letters fly in, each from a random direction and distance. This only happens once on page load, so if you want to see it again, you gotta hit refresh :)...

View Article

Image may be NSFW.
Clik here to view.

Fly-in letters - no js

See the Code - See it Full Page - See Details Letters fly in, each from a random direction and distance. This only happens once on page load, so if you want to see it again, you gotta hit refresh :)...

View Article


Image may be NSFW.
Clik here to view.

Multiple Gradients for Fancy Patterns

See the Code - See it Full Page - See Details Blog post: http://themarklee.com/2013/11/29/get-started-css-gradients/ Also see the the layering of backgrounds here:...

View Article

Image may be NSFW.
Clik here to view.

A super-simple geolocation example

See the Code - See it Full Page - See Details See blog post here for more info: http://themarklee.com/2013/10/27/super-simple-geolocation/ This Pen uses: HTML, CSS, JavaScript, and

View Article


Image may be NSFW.
Clik here to view.

A better simple slideshow

See the Code - See it Full Page - See Details This is another fairly basic slideshow, written in javascript, html, and css. This is a dual-purpose project, it’s meant (1) to be something you can drop...

View Article

Image may be NSFW.
Clik here to view.

Simple image crossfade slideshow - CSS animation

See the Code - See it Full Page - See Details A simple CSS animation, with a staggered start time for each image. A nice little algorithm for calculating the animation timing percentages can be found...

View Article

Image may be NSFW.
Clik here to view.

A simple DIY responsive slideshow made with HTML5, CSS3, and JavaScript...

See the Code - See it Full Page - See Details Not the most robust slideshow ever (it's meant to be a pretty simple example), but one nice thing about this approach is it uses JS for class-switching...

View Article
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