.overlay {
    position: absolute;
	top: 0;
	bottom: 0;
    left: 0;
    right: 0;
    background: rgba(0,0,0,0.5);
	transition: opacity 200ms;
    visibility: hidden;
    opacity: 0;
}
.overlay .buttonBirth {
    width: 100%;
}
.overlay .cancel {
    position: absolute;
    width: 100%;
    height: 100%;
    cursor: default;
}
.overlay:target {
    visibility: visible;
    opacity: 1;
}

.popup {
	margin: 75px auto;
	padding: 20px;
	background: #fff;
	border: 1px solid #666;
	width: 300px;
	box-shadow: 0 0 50px rgba(0,0,0,0.5);
    position: relative;
}
.popup  .close {
    position: absolute;
    width: 20px;
    height: 20px;
    top: 20px;
    right: 20px;
    opacity: 0.8;
    transition: all 200ms;
    font-size: 24px;
    font-weight: bold;
    text-decoration: none;
    color: #666;}
    .popup  .close:hover {
      opacity: 1;
    }

    .popup  .content {
        padding: 0px;
    overflow: auto;
  }
  p {
    margin: 0 0 1em;
  }