.style1 {
    background-color: #d4d4d4
}

#col_image {
    position: relative;
}

#col_image img {
    -webkit-transition: .5s ease;
    transition: .5s ease;
}

#col_image button {
    position: absolute;
    top: -5px;
    right: 10px;
    opacity: 0;
    -webkit-transition: .5s ease;
    transition: .5s ease;
}

#col_image:hover img,
#col_image:focus img {
    opacity: 0.8;
}

#col_image:hover button,
#col_image:focus button {
    opacity: 1;
}