.pro_nav { margin:0 5px 10px 5px;}
.pro_nav li { margin-bottom: 10px; display:inline-block; vertical-align:top;}
.pro_nav > li > a {
    background: transparent;
    -webkit-border-radius: 0;
    -moz-border-radius: 0;
    margin:0;
	font-size:15px;
    padding:10px 20px;
    border: 1px solid #ccc;
	color:#777;
}
.pro_nav > li > a:hover, .pro_nav > .active > a, .pro_nav > .active > a:hover, .pro_nav > .active > a:focus {
    background: #ff9000;
	border: 1px solid #ff9000;
    color: #fff;
}

.thumbnails li { margin:0 5px; width:18.5%; /*width:23%;*/}
.thumbnail {
    width:100%;
    height:100%;
    padding:0;
	margin:0;
    overflow: hidden;
    position: relative;
    border:1px solid #ddd;
    border-radius:0;
    text-align:center;
    background: #000;
}
.thumbnail .more {
    display:block;
    z-index:4;
    position:absolute;
    left:50%;
    margin:0 auto;
    margin-left:-40%;
    width:80%;
    height:100px;
    font-size:17px;
	font-weight:700;
    color:#fff;
    text-decoration:none;
    line-height:1.6;
    text-align: center;
}
.thumbnail:hover .more {
    top:60%;
    margin-top:-40px;
    -webkit-transition: all 0.3s ease-out;
    -moz-transition: all 0.3s ease-out;
    -o-transition: all 0.3 s ease-out;
    -ms-transition: all 0.3s ease-out;
    transition: all 0.3s ease-out;
}
.thumbnail .mask {
    top:0;
    left:0;
    width:100%;
    height:100%;
    background:rgba(0,0,0,0.0);
    position:absolute;
    -webkit-transition: all 0.2s ease-out;
    -moz-transition: all 0.2s ease-out;
    -o-transition: all 0.2 s ease-out;
    -ms-transition: all 0.2s ease-out;
    transition: all 0.2s ease-out;
}
.thumbnail:hover .mask { background:rgba(0,0,0,0.5);}
#portfolio-grid .mix { opacity: 0; display: none;}

@media screen and (max-width:991px){
	.thumbnails li { width:23%; /*width:31%;*/}
}

@media screen and (max-width:767px){
	.thumbnails li { width:30%; /*width:47%;*/}
}