[fix] make selected tabs not change wifth anymore compared to not being selected

searx/static/themes/simple/src/less/toolkit.less

@@ -301,8 +301,6 @@ html body .tabs > input:checked {
     border-bottom: 2px solid @color-categories-item-border-selected;
     background: @color-categories-item-selected;
     color: @color-categories-item-selected-font;
-    font-weight: bold;
-    letter-spacing: -0.1px;
   }
 
   + label + section {