div.whatsnew {
  margin: 10px 0;
  font-size: 100%;
  word-break: break-all;
  overflow: hidden;
}

div.whatsnew a {
  padding: 7px 0;
  display: block;
  text-decoration: none;
  box-shadow: none;
}

div.whatsnew a:hover {
  background-color: #0073e6; /* お好みの色に変更 */
  color: white; /* テキストを白にする（オプション） */
  transition: background-color 0.3s ease; /* なめらかな変化 */
}

div.whatsnew hr {
  margin: 0;
  padding: 0;
}

div.whatsnew .newmark {
  font-size: 74%;
  padding: 1px 5px;
  vertical-align: middle;
  color: White;
  background-color: #ff4500;
  border-radius: 3px;
}

div.whatsnew dl {
  margin: 0;
  padding: 0;
  border: 0;
}

div.whatsnew dt {
  margin: 0 0 0 0.3em;
  padding: 0;
  border: 0;
  color: White;
  font-weight: normal;
  white-space: nowrap;
}

div.whatsnew dd {
	border-bottom: 1px solid white;
  padding-bottom: 5px;
  margin-bottom: 5px;
  margin: 0;
  padding: 0 2px;
}

@media screen and (min-width: 600px) {
  div.whatsnew dl {
    overflow: hidden;
  }
  div.whatsnew dt {
    float: left;
    width: 8.1em;
    overflow: hidden;
  }
  div.whatsnew dd {
    overflow: hidden;
  }
}

div.whatsnew h1,
div.whatsnew h2,
div.whatsnew h3,
div.whatsnew h4 {
  color: white !important;
}