html - CSS how to change the color of a link within a class -

i have parts of webpage has dark background, want in part links white, tried several things, still darker color

css

.transback { background: rgba(7, 7, 7, 0.7);  } .transback a:{ color:white} 

html

<div class="pure-u-14-24 transback">     <a href="../gastenboek_bladeren.html">click here</a> </div> 

remove colon after a in css, not valid selector. can target a or a:link a:visited a:hover a:active not a:

.transback {    background: rgba(7, 7, 7, 0.7);   }    .transback {      color:white    }

<div class="pure-u-14-24 transback">      <a href="../gastenboek_bladeren.html">click here</a>  </div>