triangles.css

/* reset */
html,body,div,span,applet,object,iframe,h1,h2,h3,h4,h5,h6,p,blockquote,pre,a,abbr,acronym,address,big,cite,code,del,dfn,em,img,ins,kbd,q,s,samp,small,strike,strong,sub,sup,tt,var,b,u,i,center,dl,dt,dd,ol,ul,fieldset,form,label,legend,table,caption,tbody,tfoot,thead,tr,th,td,article,aside,canvas,details,embed,figure,figcaption,footer,header,hgroup,menu,nav,output,ruby,section,summary,time,mark,audio,video{border:0;font-size:100%;font:inherit;vertical-align:baseline;margin:0;padding:0}article,aside,details,figcaption,figure,footer,header,hgroup,menu,nav,section{display:block}body{line-height:1}ol,ul{list-style:none}blockquote,q{quotes:none}blockquote:before,blockquote:after,q:before,q:after{content:none}table{border-collapse:collapse;border-spacing:0}

a {outline: none;} /* firefox borders */
a img {border: none;} /* ie img borders */

html, body {
  background-color: #2b3239;
  text-shadow: 0px 1px 0px rgba(0,0,0,0.5);
  color: #3E454C;
  font-family: Helvetica, Arial;
  font-weight: 700;
  font-size: 20px;
}

/* triangles */
.triangle, .empty {
  border-color: transparent;
  border-style: solid;
  border-width: 30px;
  height: 0px;
  width: 0px;
  position: relative;
  -webkit-transform: rotate(-45deg);
  -moz-transform: rotate(-45deg);
  margin-top: -18px;
}

.triangle {
  border-color: transparent transparent transparent #3E454C;
}

.white {
  border-color: transparent transparent transparent #FFA666;
}

.blue {
  border-color: transparent transparent transparent #72A4AF;
}

#container {
  position: fixed;
  margin-top: -13px;
  max-width: 100%;
  max-height: 100%;
}

.col {
  width: 42px;
  float: left;
}

#sidebar {
  position: fixed;
  width: 50px;
  height: 100%;
  background-color: #1b2126;
  right: 0;
  cursor: pointer;
}

.sideways {
  margin-top: 40px;
  -webkit-transform: rotate(90deg);
  -moz-transform: rotate(90deg);
}