body,
html {
    height: 100%;
    margin: 0;
}

.cls-1,
.cls-2 {
    fill: #fff;
}

.cls-1 {
    opacity: 0;
}

.cls-1:hover,
.cls-2:hover {
    fill: slategrey;
    opacity: 0.3;
}

.st0{
    opacity:0;fill:#FFFFFF;
}

.st0:hover{
    fill: slategrey;
    opacity: 0.3;
}