.dropbtn{
    color:blue;
}
.dropdown{
    position:relative;
    display:inline-block;
}
.dropdown-content{
    display:none;
    position:absolute;
    background-color: grey;
    z-index:1;
}
.dropdown-content a{
    padding:12px 16px;
    text-decoration:none;
    display:block;
    color:black;
}
.show{
    display:block;
    
}
img{
    float:right;
    
}
@media screen and (min-width:960px){
     
     #shop{
         width:30%;
         height:30%;
     }
     #chair{
         height:30%;
         width:30%;
     }
     #case{
 
         height:30%;
         width:30%;
     }
    }
     
 @media screen and (max-width:959px){
    
    #chair{
        width:100%;
    }
    #case{
        width:100%;
    }
    #shop{
        width:100%;
    }
    
}