@media screen and (max-width: 768px) and (min-width:320px) {
 	
.portfolio-change-right
     {
            background: #fff;
    right: 0px;
    position: fixed;
    z-index: 1;
    height: 120px;
    box-shadow: 0px 0px 4px -1px rgba(0,0,0,0.75);
    width: 100%;
     }
    
     .portfolio-fixed-header {
    position: fixed;
    top: 27px;
    height: 131px;
    width: 265px;
    z-index: 2;
     right: none; 
    left: 10px;
}
.portfolio-intro-c {
    height: 120px;
}
.filter-button-group .button-group .button
{
    width: 100%;
}
.filter-button-group .button-group .button span
{
    float: none; 
    text-align: center; 
}
.grid .grid-item
{
    height:330px;
}
 


 	}