.onayamilist .check-icon {
  display: inline-block;
  width: 24px;
  height: 24px;
  background-color: #ffffff; /* 背景白 */
  border: 2px solid #76955e; /* DCNロゴに近い緑の枠線 */
  border-radius: 4px;        /* 少し角丸 */
  position: relative;
  vertical-align: middle;
}

/* チェックの「L」字部分 */
.onayamilist .check-icon::after {
  content: "";
  position: absolute;
  left: 6px;
  top: 2px;
  width: 6px;
  height: 12px;
  border: solid #76955e;
  border-width: 0 3px 3px 0;
  transform: rotate(45deg);
}