.post-navigation {
    display: flex;
    justify-content: space-between;
    margin: 30px 0 20px;
    padding: 15px 0;
    border-top: 1px solid #eee;
    border-bottom: 1px solid #eee;
    clear: both;
}
.nav-prev, .nav-next {
    color: #333;
    text-decoration: none;
    font-size: 14px;
    transition: color 0.2s;
}
.nav-prev:hover, .nav-next:hover {
    color: #e74c3c;
}
.nav-prev.disabled, .nav-next.disabled {
    color: #999;
    cursor: default;
}