Link in text/button style

[NAS]

I'd like my buttonstyle not to follow the rule that the links in text does. My link in text has a heavy underline.

http://urbanroomsnetwork.org/network/

Buttonstyle on this page, I've managed the
"text-decoration:none;"
and it has removed the static underline, but it won't remove the underline on hover..

Any idea's?

This is my custom css

.buttonstyle a{
    padding: 15px 20px;
    display: inline-block;
    border-style: solid;
    border-width:1.5px;
    color: black;
    line-height: 1;
    text-decoration:none;
    background-color:#FEEB34;
    white-space: nowrap;
    color: black;
}

.buttonstyle a:hover{
    background-color: #FFFFFf;
    text-decoration:none;
    color: blue;
    opacity: 1;
    
}

[arminunruh]

.buttonstyle a:hover{
    background-color: #FFFFFf;
    text-decoration:none!important;
    color: blue;
    opacity: 1;
    
}

have you tried !important