div.button {
    border:1px solid lightgrey;
    cursor:pointer;
    margin:10px;
    padding:5px;
}

div.button img {
    width: 32px;
    height: 32px;
}

div.button-select:hover {
    background-color:lightgreen;
}

div.button-chosen {
    background-color:lightgreen;
}