.o_floating_circle {
position: fixed;
right: 20px;
bottom: 20px;
width: 55px;
height: 55px;
background: #25D366;
color: white !important;
border-radius: 50%;
display: flex;
align-items: center;
justify-content: center;
font-size: 24px;
text-decoration: none !important;
z-index: 9999;
box-shadow: 0 4px 12px rgba(0,0,0,0.25);
}