#menu{
  position: absolute;
  z-index: 10;
  list-style-type: none;
  width: 1000px;
  height: 40px;
  margin: 0 auto;
  padding: 0;
  background-color: rgba( 218, 230, 234, 0.70 );
  box-shadow: 0px 3px 5px -2px rgba(0, 0, 0, 0.2);
}

#menu li{
  position: relative;
  width: 20%;
  float: left;
  margin: 0;
  padding: 0;
  text-align: center;
}
#menu li a{
  display: block;
  margin: 0;
  padding: 13px 0;
  color: #000;
  font-size: 14px;
  font-weight: bold;
  line-height: 1;
  text-decoration: none;
}
#menu li ul{
  list-style: none;
  position: absolute;
  top: 100%;
  left: 0;
  margin: 0;
    padding: 0;
}
#menu li:last-child ul{
  left: -100%;
  width: 100%
}
#menu li ul li{
  overflow: hidden;
  width: 200%;
  height: 0;
  color: #fff;
  -moz-transition: .2s;
  -webkit-transition: .2s;
  -o-transition: .2s;
  -ms-transition: .2s;
  transition: .2s;
}
#menu li ul li a{
  padding: 13px 15px;
  background: #97d9e1;
  text-align: left;
  font-size: 12px;
  font-weight: normal;
}
#menu li:hover > a{
  background: #24a4b3;
  color: #fff;
}
#menu li:hover ul li{
  overflow: visible;
  height: 38px;
  border-bottom: 1px solid #fff;
}
#menu li:hover ul li:first-child{
  border-top: 0;
}
#menu li:hover ul li:last-child{
  border-bottom: 0;
}

/* =ページトップへ戻るボタン= */
#pagetop {
    position: fixed;
    bottom: 15px;
    right: 15px;
}
#pagetop a {
    display: block;
    background: #FF7F00;
    color: #fff;
    width: 50px;
    padding: 10px 2px;
    text-align: center;
}
#pagetop a:hover {
    background: #e0ab5a;
    color: #fff;
}
/* =ページトップへ戻るボタン= 終了 */