.board
  p#error error
  p#code 404
View Compiled
@import compass

body
  background-color: #111111

.board
  position: absolute
  top: 50%
  left: 50%
  height: 150px
  width: 500px
  margin: -75px 0 0 -250px
  padding: 20px
  font: 75px/75px Monoton, cursive
  text-align: center
  text-transform: uppercase
  text-shadow: 0 0 80px red,0 0 30px FireBrick,0 0 6px DarkRed
  color: red

#error
  color: #fff
  text-shadow: 0 0 80px #ffffff,0 0 30px #008000,0 0 6px #0000ff
View Compiled
#novacancy.min.js
`(function(e){"use strict";var t=function(t,n){this._el=e(t);if(this.repeat())return true;this._settings=n;this._powerOn=false;this._loopTimeout=0;this._el.html(this.buildHTML());this._items=this._el.find("span.novacancy");this._blinkArr=this.arrayMake();this.bindEvent();this.writeCSS();if(this._settings.autoOn)this.blinkOn()};t.prototype.repeat=function(){var e=this._el;if(e[0].novacancy){return true}else{e[0].novacancy=true;return false}};t.prototype.writeCSS=function(){var t=this.css();var n=e("<style>"+t+"</style>");e("body").append(n)};t.prototype.selector=function(){var e=this._el;var t=e[0].tagName;if(e[0].id)t+="#"+e[0].id;if(e[0].className)t+="."+e[0].className;return t};t.prototype.css=function(){var e=this.selector();var t=this._settings;var n="text-shadow: "+t.glow.toString()+";";var r="color: "+t.color+";"+n;var i="color: "+t.color+"; opacity: 0.3;";var s="";s+=e+" .novacancy.on { "+r+" }"+"\n";s+=e+" .novacancy.off { "+i+" }"+"\n";return s};t.prototype.rand=function(e,t){return Math.floor(Math.random()*(t-e+1)+e)};t.prototype.isNumber=function(e){return!isNaN(parseFloat(e))&&isFinite(e)};t.prototype.blink=function(e){var t=this._settings;var n=this;this.off(e);e[0].blinking=true;setTimeout(function(){n.on(e);e[0].blinking=false;n.reblink(e)},this.rand(t.blinkMin,t.blinkMax))};t.prototype.reblink=function(e){var t=this._settings;var n=this;setTimeout(function(){if(n.rand(1,100)<=t.reblinkProbability){n.blink(e)}},this.rand(t.blinkMin,t.blinkMax))};t.prototype.on=function(e){e.removeClass("off").addClass("on")};t.prototype.off=function(e){e.removeClass("on").addClass("off")};t.prototype.buildHTML=function(){var t=this._el;var n="";e.each(t.contents(),function(t,r){if(r.nodeType==3){var i=r.nodeValue.split("");e.each(i,function(e,t){n+='<span class="novacancy on">'+t+"</span>"})}else{n+=r.outerHTML}});return n};t.prototype.arrayMake=function(){var t=this._el;var n=this._settings;var r=this._items;var i=r.length;var s=this.randomArray(i);var o;var u;var a=n.off;var f=n.blink;var l=this;a=Math.min(a,i);a=Math.max(0,a);u=s.splice(0,a);e.each(u,function(t,n){l.off(e(r[n]))});f=f===0?i:f;f=Math.min(f,i-a);f=Math.max(0,f);o=s.splice(0,f);return o};t.prototype.randomArray=function(e){var t=[];var n;var r;var i;for(n=0;n<e;++n){t[n]=n}for(n=0;n<e;++n){r=parseInt(Math.random()*e,10);i=t[r];t[r]=t[n];t[n]=i}return t};t.prototype.loop=function(){if(!this._powerOn)return;var t=this._el;var n=this._settings;var r=this._blinkArr;var i=this._items;if(r.length===0)return;var s;var o;var u=this;s=r[this.rand(0,r.length-1)];o=e(i[s]);if(!o[0].blinking)this.blink(o);this._loopTimeout=setTimeout(function(){u.loop()},this.rand(n.loopMin,n.loopMax))};t.prototype.blinkOn=function(){if(!this._powerOn){var e=this._settings;var t=this;this._powerOn=true;this._loopTimeout=setTimeout(function(){t.loop()},this.rand(e.loopMin,e.loopMax))}};t.prototype.blinkOff=function(){if(this._powerOn){this._powerOn=false;clearTimeout(this._loopTimeout)}};t.prototype.bindEvent=function(){var e=this._el;var t=this;e.on("blinkOn",function(e){t.blinkOn()});e.on("blinkOff",function(e){t.blinkOff()})};var n=function(t){var n=e.extend({reblinkProbability:1/3,blinkMin:.01,blinkMax:.5,loopMin:.5,loopMax:2,color:"ORANGE",glow:["0 0 80px Orange","0 0 30px Red","0 0 6px Yellow"],off:0,blink:0,autoOn:true},t);n.reblinkProbability*=100;n.blinkMin*=1e3;n.blinkMax*=1e3;n.loopMin*=1e3;n.loopMax*=1e3;return n};e.fn.novacancy=function(r){return e.each(this,function(e,i){new t(this,n(r))})}})(jQuery)`

$ ->
  $('#error').novacancy
    'reblinkProbability': 0.1
    'blinkMin': 0.2
    'blinkMax': 0.6
    'loopMin': 8
    'loopMax': 10
    'color': '#ffffff'
    'glow': ['0 0 80px #ffffff', '0 0 30px #008000', '0 0 6px #0000ff']

  $('#code').novacancy
    'blink': 1
    'off': 1
    'color': 'Red'
    'glow': ['0 0 80px Red', '0 0 30px FireBrick', '0 0 6px DarkRed']
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External CSS

This Pen doesn't use any external CSS resources.

External JavaScript

  1. https://cdnjs.cloudflare.com/ajax/libs/jquery/2.1.3/jquery.min.js