.nxs-button {
    -webkit-border-radius: 28;
    -moz-border-radius: 28;
    border-radius: 28px;
}

.nxs-button {
    -webkit-transition-duration: 0.4s;
    /* Safari */
    transition-duration: 0.4s;
    opacity: 1;
}

.nxs-button:hover {
    opacity: 0.8;
}