How Can I Blur Text In A Square Using Pseudo Selectors?

I want to add blur behind text up to some amount of padding. I don't want some div behind and blur the div, I want it to be bound to the text. Here is my attempt: I am getting lik

Solution 1:

You can consider overflow:hidden to stop the blur effect and have a sharpe edge. I also considered padding instead of adjusting top/left/right/bottom:

.container {
  width: 400px;
  height: 200px;
  position: relative;
  overflow: hidden;
}

.text {
  z-index: 1;
  position: absolute;
  width: auto;
  bottom: 24px;
  left: 24px;
  font-size: 36px;
  padding: 12px22px; /*added this*/overflow: hidden; /*added this*/
}

.text::before {
  content: "";
  position: absolute;
  z-index: -1;
  top: 0;
  bottom: 0;
  left: 0;
  right: 0;
  background-color: red;
  opacity: 0.4;
  filter: blur(10px);
}

<divclass="container"><h1class="text">Example Text</h1></div>