vertical navigation with pagenumbers

hello everybody. if got some question about designing pagenumbers instead for next page / last page buttons. im a pretty rookie in coding, so maybe somebody could help me out with it.

so, i want the pagenumbers shown on my webblog vertical, not horizontal like the most plugins i found. i tried this one
and selected the “classic – design” but i dont know howto code it in the “vertical way”. here is the css for the pagenumber:

#wp_page_numbers ul, #wp_page_numbers li, #wp_page_numbers a {
    background: white;
    padding: 0;
    margin: 0;
    border: none;
    text-decoration: none;
    font-weight: normal;
    font-style: normal;
    list-style: none;
    text-transform: none;
    text-indent: 0px;
    font-variant: normal;
    text-align: left;
    line-height: 12px;
    letter-spacing: 0px;
    word-spacing: 0px;
    font-size: 11px;
    font-family: Arial;
}

#wp_page_numbers {
    margin-top: 10px;
    width: 100%;
    background: white;
    margin-bottom: 10px;
}
#wp_page_numbers ul {
    width: 100%;
}
#wp_page_numbers li {
    float: left;
    display: block;
    margin-bottom: 2px;
}

#wp_page_numbers a {
    padding: 3px;
    padding-left: 5px;
    padding-right: 5px;
    margin-left: 2px;
    margin-right: 2px;
    display: block;
    color: #333;
    border: 1px solid #bfbfbf;
}

#wp_page_numbers li a:hover {
    border-color: #BA0000;
}

#wp_page_numbers li.space {
    padding: 6px;
    padding-left: 2px;
    padding-right: 2px;
}

#wp_page_numbers li.first_last_page {
    font-style: italic;
}

#wp_page_numbers li.active_page a {
    border-color: #0075b8;
}
#wp_page_numbers li.active_page a:hover  {
    color: black; /* IE fix */
    text-decoration: underline;
    border-color: #BA0000;
}

#wp_page_numbers li.page_info {
    float: left;
    display: block;
    padding: 3px;
    padding-left: 5px;
    padding-right: 5px;
    margin-right: 2px;
    color: #666;
    font-size: 11px;
    border: 1px solid #bfbfbf;
}

but maybe there is an other solution, im open to anything 🙂
Ps. sorry for my bad english :/