.menu_div {
	position: relative;
	margin-left: auto;
	margin-right: auto;
  width: 50%;
}
.menu_img {
  display: inline-block;
  max-width: 100%;
	min-width: 100%;
  height: auto;
}
.menu_txt {
  color: black;
  font-size: 2.5vw;
  position: absolute;
  top: 50%;
  left: 50%;
  -webkit-transform: translate(-50%, -50%);
  -ms-transform: translate(-50%, -50%);
  transform: translate(-50%, -50%);
  text-align: center;
}
.menu_txt_sm {
  color: black;
  font-size: 1.25vw;
  position: absolute;
  top: 50%;
  left: 50%;
  -webkit-transform: translate(-50%, -50%);
  -ms-transform: translate(-50%, -50%);
  transform: translate(-50%, -50%);
  text-align: center;
}
.menu_mp4 {
	width: 100%;
}
.menu_ovr{
  position: absolute;
  top: 0;
  bottom: 0;
  left: 0;
  right: 0;
  height: 100%;
  width: 100%;
  opacity: 0;
  transition: .5s ease;
  background-color: #FFFFFF;
}
.menu_div:hover .menu_ovr {
  opacity: 1;
}
.menu_mp3 {

}
.menu_pdf {
	position: relative;
	margin-left: auto;
	margin-right: auto;
  	width: 75%;
	height: 75vh;
}
.nav_bl {
  position: fixed;
  bottom: 0;
  left: 0;
  width: 10%;
}
.nav_bl:hover .nav_ovr {
  opacity: 1;
}
.nav_br {
  position: fixed;
  bottom: 0;
  right: 0;
  width: 10%;
}
.nav_br:hover .nav_ovr {
  opacity: 1;
}
.nav_img {
  display: block;
  width: 100%;
  height: auto;
}
.nav_ovr {
  position: absolute;
  top: 0;
  bottom: 0;
  left: 0;
  right: 0;
  height: 100%;
  width: 100%;
  opacity: 0;
  transition: .5s ease;
  background-color: #FFFFFF;
}
.nav_txt {
  color: black;
	font-size: 1vw;
  position: absolute;
  top: 50%;
  left: 50%;
  -webkit-transform: translate(-50%, -50%);
  -ms-transform: translate(-50%, -50%);
  transform: translate(-50%, -50%);
  text-align: center;
}
.nav_bl:hover .nav_ovr {
  opacity: 1;
}