.pht-nav button {
    padding: 7px 16px;
    font-size: inherit;
}
.pht-disabled {
    background-color: lightgray;
    color: darkgray;
    border: 1px solid darkgray;
}
.pht-page.ready .pht-next {
    background-color: green;
    color: white;
}

.pht-page.pht-manual-next .pht-next {
    background-color: green;
    color: white;
}

.pht-page .pht-nav {
    padding: 15px 0;
    display: flex;
    justify-content: space-between;
}