.fcb-call-btn{

position:fixed;

right:20px;

bottom:20px;

width:60px;

height:60px;

background:#28a745;

border-radius:50%;

display:flex;

justify-content:center;

align-items:center;

text-decoration:none;

box-shadow:0 8px 20px rgba(0,0,0,.25);

z-index:999999;

transition:.3s;

animation:fcbpulse 2s infinite;

}

.fcb-call-btn:hover{

transform:scale(1.1);

background:#218838;

}

@keyframes fcbpulse{

0%{

box-shadow:0 0 0 0 rgba(40,167,69,.7);

}

70%{

box-shadow:0 0 0 18px rgba(40,167,69,0);

}

100%{

box-shadow:0 0 0 0 rgba(40,167,69,0);

}

}