#gallery_sort {
  font-size: 16px; 
	font-family: Champ, Segoeui, Arial; 
	color: #696969;
	text-decoration: none;
	cursor:pointer;
	-webkit-transition: 1s;
            transition: 1s;
  }
  
    #gallery_sort:hover {
  font-size: 16px; 
	font-family: Champ, Segoeui, Arial; 
	color: #9211ab;
	text-decoration: none;
	cursor:pointer;
	-webkit-transition: 1s;
            transition: 1s;
  }
  
  	a#gallery_img:hover{
	opacity : 0.50;
	filter : alpha(opacity=50);
}

.tresc3{
-webkit-background-size: cover; 
-moz-background-size: cover; 
-o-background-size: cover; 
background-size: cover; 
background-position: center; 
width:0px; 
height:0px;
}
.tresc3:hover{
background-size: 155%;
-webkit-background-size: 155%; 
-moz-background-size: 155%; 
-o-background-size: 155%;
-webkit-transition: 1s;
transition: 1s;
}