.outer-wrapper{
    display: inline-block; 
    margin: 20px;
}
.frame{  
    position:relative;
    top:400px;
    width: 25%;
    height: 25%;
    vertical-align: middle;
    text-align: center;
    display: table-cell;
}    
img{
    width:25%;
    max-width: 100%;
    max-height: 100%;
    display: block;
    margin: 0 auto;
}