.rule {
  position: relative;
  z-index: 1;
  overflow: hidden;
}

.rule::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background-image: url("../images/suidou.webp");
  background-size: cover;
  background-position: center;
  filter: blur(3px);
  z-index: -1;
  transform: scale(1.05);
}


.rule h1 {
    text-align: center;
    font-size: 60px;
    color: #ffffff;
    font-family: "M PLUS 1", sans-serif;
    text-shadow: 0px 0px 10px rgb(0, 0, 0);
}

.rule h2 {
    text-align: center;
    font-size: 30px;
    color: #ffffff;
    font-family: "M PLUS 1", sans-serif;
    padding-bottom: 20px;
    text-shadow: 0px 0px 10px rgb(0, 0, 0);
}

.rule ul li {
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.438);
    background-color: #2b2d31;
    border-radius: 10px;
    height: 80px;
    width: 80%;
    padding-left: 10px;
    padding-right: 10px;
    margin: 20px auto;
    transition: transform 0.1s ease-out;
    box-sizing: border-box;
    display: flex;
    align-items: center;
    justify-content: center;
}

.rule ul li p {
    color: #ffffff;
    font-size: 20px;
    font-family: "M PLUS 1", sans-serif;
}

.rule ul li:hover {
    transform: translateY(-2px);
}

@media screen and (max-width: 768px) {
    .rule h2 {
        font-size: 18px;
        margin-left: 15px;
        margin-right: 15px;
    }

    .rule ul li p {
        font-size: 15px;
    }
}