.overlay {
  position: fixed;
  top: 0;
  bottom: 0;
  left: 0;
  right: 0;
  background: rgba(0, 0, 0, 0.7);
  transition: opacity 500ms;
  visibility: hidden;
  opacity: 0;
}
.overlay:target {
  visibility: visible;
  opacity: 1;
}

.popup {
  margin: 70px auto;
  padding: 20px;
  background: #fff;
  border-radius: 5px;
  width:60%;
  position: relative;
  transition: all 5s ease-in-out;
}

.popup h2 {
  margin-top: 0;
 
  font-family: Tahoma, Arial, sans-serif;
}
.popup .close {
	position: absolute;
	top:11px;
	right: 8px;
	transition: all 200ms;
	font-size: 30px;
	font-weight: bold;
	text-decoration: none;
	color: #333;
}
.popup .close:hover {
  color: #06D85F;
}
.popup .content {
  max-height: 30%;
  overflow: auto;
}
#big img{
width:100%;
}
@media screen and (max-width:720px){
#download_icon img{
width:35%;
}
.overlay {
  position: fixed;
  top: 0;
  bottom: 0;
  left: 0;
  right: 0;
  background: rgba(0, 0, 0, 0.7);
  transition: opacity 500ms;
  visibility: hidden;
  opacity: 0;
}
.overlay:target {
  visibility: visible;
  opacity: 1;
}

.popup {
  margin: 70px auto;
  padding: 20px;
  background: #fff;
  border-radius: 5px;
  width:80%;
  position: relative;
  transition: all 5s ease-in-out;
}

.popup h2 {
  margin-top: 0;
 
  font-family: Tahoma, Arial, sans-serif;
}
.popup .close {
	position: absolute;
	top:11px;
	right: 8px;
	transition: all 200ms;
	font-size: 30px;
	text-align:center;
	font-weight: bold;
	text-decoration: none;
	color: #333;
	text-align:center;
}
.popup .close:hover {
  color: #06D85F;
}
.popup .content {
  max-height: 30%;
  overflow: auto;
}
#big img{
width:100%;
}

}