ul.pagination {
    display: inline-block;
    padding: 0;
    margin: 0;
}

ul.pagination li {display: inline;}

ul.pagination li a {
    color: black;
    float: left;
    padding: 8px 16px;
    text-decoration: none;
    transition: background-color .3s;
    border: 1px solid #ddd;
}

ul.pagination li a.active {

    background-color: #3ad251;
    color: white;
    border: 1px solid #3ad251;

}

ul.pagination li a:hover:not(.active) {background-color: #ddd;}

div.center {text-align: center;}