johnny04501 johnny04501 - 6 months ago 9
CSS Question

CSS before not working

I just building website everything working well but when I am trying to apply :before or :after pseudo-elements on some element so the small bubble should be behind the big one and it somehow not working and don't know why.



.bubble {
position: relative;
display: table-cell;
vertical-align: middle;
width: 135px;
height: 135px;
background-color: #666;
-webkit-border-radius: 75px;
-moz-border-radius: 75px;
-o-border-radius: 75px;
-ms-border-radius: 75px;
border-radius: 75px;
-moz-box-shadow: 0 0 50px 0 rgba(236, 3, 91, 0.20);
-webkit-box-shadow: 0 0 50px 0 rgba(236, 3, 91, 0.20);
box-shadow: 0 0 50px 0 rgba(236, 3, 91, 0.20);
z-index: 10;
}
.bubble.black:before {
top: 0;
left: 0;
content: "";
position: absolute;
width: 80px;
height: 80px;
background-color: #000;
-webkit-border-radius: 75px;
-moz-border-radius: 75px;
-o-border-radius: 75px;
-ms-border-radius: 75px;
border-radius: 75px;
-moz-box-shadow: 0 0 50px 0 rgba(236, 3, 91, 0.20);
-webkit-box-shadow: 0 0 50px 0 rgba(236, 3, 91, 0.20);
box-shadow: 0 0 50px 0 rgba(236, 3, 91, 0.20);
z-index: 1;
}

<div class="bubble black"></div>




Answer

You can remove z-index from parent and use z-index: -1 on pseudo element

.bubble {
  position: relative;
  width: 135px;
  height: 135px;
  background-color: #666;
  border-radius: 75px;
  box-shadow: 0 0 50px 0 rgba(236, 3, 91, 0.20);
}
.bubble.black:before {
  top: 0;
  left: 0;
  content: "";
  position: absolute;
  width: 80px;
  height: 80px;
  background-color: #000;
  border-radius: 75px;
  box-shadow: 0 0 50px 0 rgba(236, 3, 91, 0.20);
  z-index: -1;
}
<div class="bubble black"></div>