/*-------------------------------------------------*/
html{
  scroll-behavior: smooth;
}
#page_top{
  width: 80px;
  height: 80px;
  position: fixed;
  opacity: 0.6;
  border-radius: 50%;
  right: 15px;
  background:#007DC6;
    bottom: 10px;
	z-index:1000;
}


#page_top a{
  position: relative;
  display: block;
  width: 80px;
  height: 80px;
  text-decoration: none;
}
#page_top a::before{
  font-family: 'Font Awesome 5 Free';
  font-weight: 900;
  font-size: 25px;
  color: #fff;
  position: absolute;
  width: 25px;

  height: 25px;
  top: -30px;
  bottom: 0;
  right: 0;
  left: 0;
  margin: auto;
  text-align: center;
    content:"▲";
}
#page_top a::after{
  font-size: 13px;
  color: #fff;
  position: absolute;
  top:35px;
  bottom: 0;
  right: 0;
  left: 0;
  margin: auto;
  text-align: center;
  content:"PAGE TOP";
}
# hedder_nav a.ok_b{
padding:0.3em 1em;
  font-size: 100px;
  color: #fff;
  background:rgba(0,125,198,0.8);
}
# hedder_nav a.ok_b:hover{
color: #333;
  background:rgba(0,125,198,1);
}
/*-------------------------------------------------*/