.dropdown-item img, .dropdown-item span {
    display: block;
    text-align: center;
}
.f-size-25 {
    font-size: 25px;
    margin-right: 5px;
}
.f-size-25:hover {
    text-decoration: none !important;
}

.exchange span {
	margin-right: 50px; 
  color: #fff;
}