.posts-tag {
    font-size: 12px;
    font-weight: 500;
    border: 1px solid #333;
    padding: 2px 4px;
    margin: 4px 2px;
    color: #333;
}

.posts-tag:hover {
    font-size: 12px;
    font-weight: 500;
    border: 1px solid #fff;
    padding: 2px 4px;
    margin: 4px 2px;
    color: #fff;
    background-color: #333;
}