.panel.panel-primary
    .panel-heading Challenges
    .panel-body
        ol(start='0')
            li
                a(href="/challenges/0", class="#{ cc.indexOf(0) > -1 ? 'strikethrough' : '' }") A One-minute Introduction to Free Code Camp
            li
                a(href="/challenges/1", class="#{ cc.indexOf(1) > -1 ? 'strikethrough' : '' }") Enter the Free Code Camp Chat Room
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                a(href="/challenges/2", class="#{ cc.indexOf(2) > -1 ? 'strikethrough' : '' }") Create a Website and Deploy it to the Internet
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                a(href="/challenges/3", class="#{ cc.indexOf(3) > -1 ? 'strikethrough' : '' }") Install Github's Atom Text Editor
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                a(href="/challenges/4", class="#{ cc.indexOf(4) > -1 ? 'strikethrough' : '' }") Modify and Redeploy Your Website
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                a(href="/challenges/5", class="#{ cc.indexOf(5) > -1 ? 'strikethrough' : '' }") Start Your First Pair Programming Session
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                a(href="/challenges/6", class="#{ cc.indexOf(6) > -1 ? 'strikethrough' : '' }") Add Dynamic Content to your Website
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                a(href="/challenges/7", class="#{ cc.indexOf(7) > -1 ? 'strikethrough' : '' }") Codecademy's HTML & CSS track
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                a(href="/challenges/8", class="#{ cc.indexOf(8) > -1 ? 'strikethrough' : '' }") Experiment with HTML and CSS in CodePen
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                a(href="/challenges/9", class="#{ cc.indexOf(9) > -1 ? 'strikethrough' : '' }") Code School's Try jQuery
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                a(href="/challenges/10", class="#{ cc.indexOf(10) > -1 ? 'strikethrough' : '' }") jQuery Exercises
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                a(href="/challenges/11", class="#{ cc.indexOf(11) > -1 ? 'strikethrough' : '' }") Code School's Discover DevTools
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                a(href="/challenges/12", class="#{ cc.indexOf(12) > -1 ? 'strikethrough' : '' }") Customize Bootstrap with Bootswatch
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                a(href="/challenges/13", class="#{ cc.indexOf(13) > -1 ? 'strikethrough' : '' }") Inject Life with CSS Transformations
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                a(href="/challenges/14", class="#{ cc.indexOf(14) > -1 ? 'strikethrough' : '' }") Codecademy's JavaScript track
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                a(href="/challenges/15", class="#{ cc.indexOf(15) > -1 ? 'strikethrough' : '' }") Get Help The Hacker Way with RSAP
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                a(href="/challenges/16", class="#{ cc.indexOf(16) > -1 ? 'strikethrough' : '' }") Stanford's Introduction to Computer Science
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                a(href="/challenges/17", class="#{ cc.indexOf(17) > -1 ? 'strikethrough' : '' }") Easy Algorithm Scripting Challenges on Coderbyte
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                a(href="/challenges/18", class="#{ cc.indexOf(18) > -1 ? 'strikethrough' : '' }") Stanford's Relational Databases Mini-course
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                a(href="/challenges/19", class="#{ cc.indexOf(19) > -1 ? 'strikethrough' : '' }") Stanford's SQL Mini-course
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                a(href="/challenges/20", class="#{ cc.indexOf(20) > -1 ? 'strikethrough' : '' }") Stanford's JSON Mini-course
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                a(href="/challenges/21", class="#{ cc.indexOf(21) > -1 ? 'strikethrough' : '' }") Medium Algorithm Scripting Challenges on Coderbyte
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                a.disabled(href="/challenges/22", class="#{ cc.indexOf(22) > -1 ? 'strikethrough' : '' }") Build an Interview Question Machine
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                a.disabled(href="/challenges/23", class="#{ cc.indexOf(23) > -1 ? 'strikethrough' : '' }") Build a Text-based Adventure
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                a.disabled(href="/challenges/24", class="#{ cc.indexOf(24) > -1 ? 'strikethrough' : '' }") Hard Algorithm Scripting Challenges on Coderbyte
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                a.disabled(href="/challenges/25", class="#{ cc.indexOf(25) > -1 ? 'strikethrough' : '' }") Code School's Try Git
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                a.disabled(href="/challenges/26", class="#{ cc.indexOf(26) > -1 ? 'strikethrough' : '' }") Install Node.js
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                a.disabled(href="/challenges/27", class="#{ cc.indexOf(27) > -1 ? 'strikethrough' : '' }") Clone a Github Repo
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                a.disabled(href="/challenges/28", class="#{ cc.indexOf(28) > -1 ? 'strikethrough' : '' }") Deploy an app to Heroku
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                a.disabled(href="/challenges/29", class="#{ cc.indexOf(29) > -1 ? 'strikethrough' : '' }") Code School's Real-time web with Node.JS
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                a.disabled(href="/challenges/30", class="#{ cc.indexOf(30) > -1 ? 'strikethrough' : '' }") Try MongoDB
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                a.disabled(href="/challenges/31", class="#{ cc.indexOf(31) > -1 ? 'strikethrough' : '' }") Explore your Network with the LinkedIn API
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                a.disabled(href="/challenges/32", class="#{ cc.indexOf(32) > -1 ? 'strikethrough' : '' }") Build your first API
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                a.disabled(href="/challenges/33", class="#{ cc.indexOf(33) > -1 ? 'strikethrough' : '' }") Aggregate Data with Chron Jobs and Screen Scraping
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                a.disabled(href="/challenges/34", class="#{ cc.indexOf(34) > -1 ? 'strikethrough' : '' }") Code School's Shaping up with Angular.JS
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                a.disabled(href="/challenges/35", class="#{ cc.indexOf(35) > -1 ? 'strikethrough' : '' }") Reverse Engineer SnapChat
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                a.disabled(href="/challenges/36", class="#{ cc.indexOf(36) > -1 ? 'strikethrough' : '' }") Reverse Engineer Reddit
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                a.disabled(href="/challenges/37", class="#{ cc.indexOf(37) > -1 ? 'strikethrough' : '' }") Reverse Engineer Pintrest
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                a.disabled(href="/challenges/38", class="#{ cc.indexOf(38) > -1 ? 'strikethrough' : '' }") Help a Nonprofit: Team Project
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                a.disabled(href="/challenges/39", class="#{ cc.indexOf(39) > -1 ? 'strikethrough' : '' }") Help a Nonprofit: Solo Project
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                a.disabled(href="/challenges/40", class="#{ cc.indexOf(40) > -1 ? 'strikethrough' : '' }") Crack the Coding Interview