ul, li {
  margin: 0;
  padding: 0;
  border: 0;
  font-size: 100%;
  font: inherit;
  vertical-align: baseline;
  outline: none;
  -webkit-font-smoothing: antialiased;
  -webkit-text-size-adjust: 100%;
  -ms-text-size-adjust: 100%;
  -webkit-box-sizing: border-box;
  -moz-box-sizing: border-box;
  box-sizing: border-box;
}

img { border: 0; max-width: 100%; height: auto; }

/** page structure **/


/** filters list **/
#filter-list {
	display: block;
	width: 100%;
	text-align: center;
	margin-bottom: 25px;
}

#filter-list li {
  display: inline-block;
  width: auto;
  padding: 5px 8px;
	margin: 0 8px 0 8px;
	font-size: 1.2em;
	cursor: pointer;
}
#filter-list li:hover {
	background: #e2e2e2;
}
#filter-list li.active {
	background-color: #ffcc00;
  color: #000;
}

/** portfolio list **/
#portfolio {
	display: block;
  width: 100%;
  height: 100%;
  padding: 0 12px;
  margin-bottom: 35px;
	text-align: center;
}
#portfolio .item {
	display: none;
	opacity: 0;
	width: 28%;
	vertical-align: top;
	margin: 0 18px 25px 17px;
  padding:0;
	color: #fff;
	font-size: 30px;
	text-align: center;
}

/** clearfix **/
.clearfix:after { content: "."; display: block; clear: both; visibility: hidden; line-height: 0; height: 0; }
.clearfix { display: inline-block; }
 
html[xmlns] .clearfix { display: block; }
* html .clearfix { height: 1%; }


/** media queries **/
@media only screen and (max-width: 768px) {
  #portfolio { margin-bottom: 20px; }
  #portfolio .item { 	width: 26%; margin: 0 20px 20px 10px; }
}


@media only screen and (max-width: 600px) {
  #portfolio { margin-bottom: 20px; }
  #portfolio .item { 	width: 40%; margin: 0 20px 20px 10px; } 

}


@media screen and (max-width: 479px) {
  #filter-list { padding: 0 18px; }
  #filter-list li { display: block; margin-bottom: 3px; }
  
  #portfolio { margin-bottom: 20px; }
  #portfolio .item { 
  : 85%; margin: 0 20px 25px 0; }

}