/* 見出し2 */
.article h2{
background:none;
padding: 0;
}
.article h2{
  padding: 0.8em;/*文字周りの余白*/
  color: #393f4c;/*文字の色*/
  background: #f5f5f5;/*背景の色*/
  border-left: solid 5px #778899;/*左線 太さ 色*/
}

/* 見出し3 */
.article h3{
    border: none;
    padding: 0;
}
h3{
  position: relative;
  padding: 0.25em 0;
}
.article .entry-content >h3:after {
  content: "";
  display: block;
  height: 4px;
  background: -webkit-linear-gradient(to right, rgb(119, 136, 153), transparent);
  background: linear-gradient(to right, rgb(119, 136, 153), transparent);
}