CSS Popup With Button to Close - css

Question

I am Using CSS for controlling and showing POPUP on my page, everything works fine, but i want Okay button to close popup instead of close it by clicking on cross button on right top corner . is there any way for doing this in css. or what can i do alternative for this.
.box {
width: 40%;
margin: 0 auto;
background: rgba(255,255,255,0.2);
padding: 35px;
border: 2px solid #fff;
border-radius: 20px/50px;
background-clip: padding-box;
text-align: center;
}
.button {
font-size: 1em;
padding: 10px;
color: #fff;
border: 2px solid #06D85F;
border-radius: 20px/50px;
text-decoration: none;
cursor: pointer;
transition: all 0.3s ease-out;
}
.button:hover {
background: #06D85F;
}
.popup h2 {
margin-top: 0;
color: #333;
font-family: Tahoma, Arial, sans-serif;
}
.popup .close {
position: absolute;
top: 20px;
right: 30px;
transition: all 0.2s;
font-size: 30px;
font-weight: bold;
text-decoration: none;
color: #333;
}
.popup .close:hover {
color: #06D85F;
}
.popup .content {
max-height: 30%;
overflow: auto;
}
/*Let's make it appear when the page loads*/
.overlay:target:before {
display: none;
}
.overlay:before {
content:"";
top: 0;
left: 0;
right: 0;
bottom: 0;
display: block;
background: rgba(0, 0, 0, 0.6);
position: fixed;
z-index: 9;
}
.overlay .popup {
background: #fff;
border-radius: 5px;
width: 64%;
position: fixed;
top: 25%;
left: 18%;
padding: 25px;
margin: 70px auto;
z-index: 10;
-webkit-transition: all 0.6s ease-in-out;
-moz-transition: all 0.6s ease-in-out;
transition: all 0.6s ease-in-out;
}
.overlay:target .popup {
top: -100%;
left: -100%;
}
#media screen and (max-width: 768px){
.box{
width: 70%;
}
.overlay .popup{
width: 70%;
left: 15%;
}
}
<!--popup starts-->
<div id="popup1" class="overlay">
<div class="popup">
<h3 style="margin-bottom: 13px; text-align:center; color:red;">Your Application Id : <?php echo $appid;?></h3>
<a class="close" href="#popup1">×</a>
<div class="content">
Thank you <span style="text-transform:uppercase; font-weight:600;"><?php echo $firstname;?> <?php echo $middlename;?> <?php echo $surname;?></span> for registring for e-visa service.there is more text.
</div>
</div>
</div>
<!--popup end-->

Answer 1

.... or you could just use an anchor styled as a button
.popup h2 {
margin-top: 0;
color: #333;
font-family: Tahoma, Arial, sans-serif;
}
.popup .close {
display:block;
border:1px solid darkblue;
text-align:center;
background: steelblue;
color:white;
border-radius:5px;
padding:5px;
}
.popup .close:hover {
color: #06D85F;
}
.popup .content {
max-height: 30%;
overflow: auto;
}
/*Let's make it appear when the page loads*/
.overlay:target:before {
display: none;
}
.overlay:before {
content:"";
top: 0;
left: 0;
right: 0;
bottom: 0;
display: block;
background: rgba(0, 0, 0, 0.6);
position: fixed;
z-index: 9;
}
.overlay .popup {
background: #fff;
border-radius: 5px;
width: 64%;
position: fixed;
top: 0;
left: 18%;
padding: 25px;
margin: 70px auto;
z-index: 10;
-webkit-transition: all 0.6s ease-in-out;
-moz-transition: all 0.6s ease-in-out;
transition: all 0.6s ease-in-out;
}
.overlay:target .popup {
top: -100%;
left: -100%;
}
#media screen and (max-width: 768px){
.box{
width: 70%;
}
.overlay .popup{
width: 70%;
left: 15%;
}
}
<!--popup starts-->
<div id="popup1" class="overlay">
<div class="popup">
<h3 style="margin-bottom: 13px; text-align:center; color:red;">Your Application Id : <?php echo $appid;?></h3>
<div class="content">
Thank you <span style="text-transform:uppercase; font-weight:600;"><?php echo $firstname;?> <?php echo $middlename;?> <?php echo $surname;?></span> for registring for e-visa service.there is more text.
</div>
<a class="close" href="#popup1">OK</a>
</div>
</div>
<!--popup end-->