body {
  font-family: "游明朝", YuMincho, "ヒラギノ明朝 ProN W3", "Hiragino Mincho ProN", "HG明朝E", "ＭＳ Ｐ明朝", "ＭＳ 明朝", serif;
    margin: 0;
    padding: 0;
}
ul {
  margin: 0;
  padding: 0;
  list-style: none !important; /* 黒丸を確実に消す */
}

 
/*===============ナビゲーションボタンとアニメーションここから=================*/
*:before,
*:after {
  box-sizing: border-box;
}

.menu_item {
  z-index: -2;
}
label .menu {
  position: absolute;
  left: -30px;
  top: -100px;
  z-index: 100;
  width: 100px;
  height: 170px;
  border-radius: 50% 50% 50% 50%;
  transition: .5s ease-in-out;
  box-shadow: 0 0 0 0 #FFF, 0 0 0 0 #FFF;
  cursor: pointer;
}
label .hamburger {
  position: absolute;
  top: 135px;
  left: 50px;
  width: 30px;
  height: 2px;
  background: #fff;
  display: block;
  -webkit-transform-origin: center;
  transform-origin: center;
  transition: .5s ease-in-out;
}
label .hamburger:after, label .hamburger:before {
  transition: .5s ease-in-out;
  content: "";
  position: absolute;
  display: block;
  width: 100%;
  height: 100%;
  background: #fff;
}
label .hamburger:before {
  top: -10px;
}
label .hamburger:after {
  bottom: -10px;
}
label input {
  display: none;
}
label input:checked + .menu .hamburger {
  -webkit-transform: rotate(45deg);
  transform: rotate(45deg);
}
label input:checked + .menu .hamburger:after {
  -webkit-transform: rotate(90deg);
  transform: rotate(90deg);
  bottom: 0;
}
label input:checked + .menu .hamburger:before {
  -webkit-transform: rotate(90deg);
  transform: rotate(90deg);
  top: 0;
}
label input:checked + .menu + ul {
  opacity: 1;
}
label ul {
  z-index: 200;
  position: absolute;
  top: 50%;
  left: 50%;
  -webkit-transform: translate(-50%, -50%);
  transform: translate(-50%, -50%);
  opacity: 0;
  transition: .25s 0s ease-in-out;
}
.overlay {
  z-index: 999;
}
/*===============ナビゲーションボタンとアニメーションここまで==================*/

/*top以外のナビゲーション*/
.menu_item li {
  margin: 20px auto;
  width: 100vw;
  text-align: center;
}
.menu_item li a {
  color: #fff;
  text-decoration: none;
  display: block;
  border: solid 1px #fff;
  width: 20%;
  margin: 0 auto;
  padding: 1%;
  letter-spacing: 0.15rem;
  font-size: 16px;
}
.menu_item li a:hover {
  color: #fffb00;
  border: solid 1px #fffb00;
}

/*=============== 黒丸（・）を完全削除 ===============*/
.overlay_menu, .overlay_menu li {
  list-style: none !important;
  padding: 0 !important;
  margin: 0 !important;
}

.overlay_menu li::before,
.overlay_menu li::after {
  content: "" !important;
  display: none !important;
  visibility: hidden !important;
  width: 0 !important;
  height: 0 !important;
}

.menu.open .overlay_menu, 
.menu.open .overlay_menu li {
  list-style: none !important;
}

/* `reset.css` や `common.css` の影響を打ち消す */
ul, li {
  list-style: none !important;
  padding-left: 0 !important;
  margin-left: 0 !important;
}

* {
  list-style: none !important;
}

/*===============================================
  横幅480pxまで（固定表示）
===============================================*/
@media screen and (max-width: 480px){
label ul {
  left: 50%;
}
.menu_item li a {
  width: 50%;
  margin: 0 auto;
  padding: 3%;
}
body {
  overflow-x: hidden;
}
}