.sidebar .wp-block-categories-list li{
  padding: 7px 10px;
}
.sidebar .wp-block-categories-list a{
  text-decoration: none;
}
.sidebar .wp-block-categories-list a:hover{
  text-decoration: underline;
}

.sidebar .wp-block-latest-posts__list li{
  padding: 7px 10px;
  border-bottom: 1px solid #ccc;
}
.sidebar .wp-block-latest-posts__list li:last-child{
  border-bottom: 0px;
}
.sidebar .wp-block-latest-posts__list a{
  text-decoration: none;
}
.sidebar .wp-block-latest-posts__list a:hover{
  text-decoration: underline;
}