* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

html[lang=ja] * {
  word-break: normal;
  overflow-wrap: break-word;
}


li {
  list-style: none;
}

img {
  display: block;
}

a {
  text-decoration: none;
  color: black;
  cursor: pointer;
}



body {
  font-family: "Segoe UI", Arial, Meiryo, sans-serif;
  height: 100vh;
}

.m-plus-1p-regular {
  font-family: "M PLUS 1p", sans-serif;
  font-weight: 400;
  font-style: normal;
}


#headerTop {
  width: 100%;
  height: fit-content;
  margin-left: auto;
  margin-right: auto;
  position: fixed;
  background-color: #fff;
  z-index: 100;
  display: flex;
  justify-content: space-between;
}

#logo {
  transition: 1s;
  margin-top: 15px;
  margin-left: 20px;
}



#navigation ul li {
  display: inline-block;
  font-size: 20px;
  margin: 10px 20px;
  font-weight: bold;
}


#navigation .button:hover {
  opacity: 0.5;
  border-bottom: 5px solid #000000;
  opacity: 0.8;
  transition: 0.3s ease;
}



#hamburger {
  display: none;
  flex-direction: column;
  justify-content: space-between;
  width: 30px;
  height: 22px;
  cursor: pointer;
  margin: 20px;

}

#hamburger span {
  display: block;
  height: 3px;
  background: #8f8e8e;
  border-radius: 3px;
}


@media (max-width: 767px) {
  #navigation {
    display: none;
    position: absolute;
    top: 70px;
    right: 0;
    background: #a6a5a5;
    opacity: 0.7;
    width: 200px;
    box-shadow: 0 5px 10px rgba(0, 0, 0, 0.1);
  }

  #navigation ul {
    display: flex;
    flex-direction: column;
    padding: 10px 0;
  }

  #navigation ul li {
    margin: 15px;
    text-align: center;
  }

  #hamburger {
    display: flex;

  }


  #navigation.active {
    display: block;
  }
}



footer {
  max-width: 100%;
  text-align: center;
  margin-top: auto;
  padding: 12px 0;
  color: white;
  background-color: #323232;

}