.usd-vnd-hover-icon { cursor: pointer; margin-left:5px; }
.usd-vnd-tooltip { 
    position: absolute; 
    background: #222; 
    color: #fff; 
    padding: 5px 10px; 
    border-radius: 5px; 
    font-size: 13px; 
    z-index: 9999; 
    white-space: nowrap;
    transition: all 0.2s ease;
}