Question

Can someone guide me on how can I style “archive widget”
to show two columns (as in image below)?

I am new to wordpress and really don’t know how to achieve this.

Answer 1

i designed my own widget something like

in my sidebar.php file by spliting categories data into two columns and then somewhere in page its stlying depending upon this data.

<?php       
 $catArray = explode("</li>",wp_list_categories('title_li=&echo=0&depth=1'));
 $catCount = count($catArray) - 1;
 $catColumns = round($catCount / 2);

 for ($i=0;$i<$catCount;$i++) {
  if ($i<$catColumns){
   $catLeft = $catLeft.''.$catArray[$i].'</li>';
          }
  elseif ($i>=$catColumns){
   $catRight = $catRight.''.$catArray[$i].'</li>';
   }  
 };
?>