body {
  font-family: sans-serif;
  gap: 10px;
}
.rule-box {
  margin-block: 10px;
  display: flex;
  gap: 10px;
}
.rule-group {
  border: 1px solid black;
  border-radius: 10px;
  background-color: lightgray;
  padding: 10px;
}
.rule-title {
  font-weight: bold;
}
.rptchk {
  position: relative;
  display: inline-block;
}
.rptchk img {
  display: block;
}
.rptchk svg {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  opacity: 0;
  transition: opacity 0.2s ease;
}
.rptchk svg:hover {
  opacity: 1;
}