.pdmcf, .pdmcf2, 
.pdmcf3, .pdmcf4 {
    position: fixed;
    bottom: 300px;
    right: 15px;
    background: rgba(17, 0, 255, 0.253);
    color: white;
    padding: 6px;
    border-radius: 5%;
    cursor: pointer;
    transition: transform 0.2s ease-in-out, background 0.3s;
    z-index: 9999; 
}
.pdmcf2 {
    bottom: 250px;
}
.pdmcf3 {
    bottom: 200px;
}
.pdmcf4 {
    bottom: 150px;
}
.pdmcf:hover , .pdmcf2:hover , 
.pdmcf3:hover , .pdmcf4:hover {
    transform: scale(1.1);
    background: rgb(10, 10, 0);
    color: red;
}