.sm1{
width: 210px;
height: 200px;
background: url("/uploads/staff/m1.jpg") no-repeat;
transition:all 0.3s;
}
.sm1:hover{
width: 210px;
height: 200px;
background: url("/uploads/staff/m2.jpg") no-repeat;
transition:all 0.3s;
}