Change some css

Hi,

I want to change the css for the li, but I can’t override it, because you already used important:

.wpsm_nav-tabs > li > a {

margin-right: 0px !important;
line-height: 1.42857143 !important;
border: 1px solid #7d6550 !important;
border-radius: 0px 0px 0 0 !important;
background-color: #907863 !important;
color: #ffffff !important;
padding: 15px 18px 15px 18px !important;
text-decoration: none !important;
font-size: 11px !important;
text-align: center !important;
font-family: Open Sans !important;

}

Is there another way to change the padding, the border etc.?

Kind regards,
Debby