.btn.edit-feature {
    width: 100%;
    height: 100%;
    max-height:500px;
    max-width:500px;
}

.mini-feature {
    min-width: 30px;
    min-height: 30px;
    width: 100%;
    height: 100%;
}
.mini-feature path {
    stroke:red;
    stroke-width:1px;
    fill: #ff000033;
}