.btn-fab {
    position: absolute;
    height: 64px;
    width: 64px;
    border-radius: 50%;
    right: 64px;
    bottom: 64px;
    box-shadow: 2px 2px 2px 1px rgba(0, 0, 0, .65);
}

.btn-fab i {
    font-size: 2.5em;
}