<h3 class="hover-1">1. Hover Me</h3>
.hover-1 {
  line-height: 1.2em;
  color: #0000;
  text-shadow: 
    0 0 #000, 
    0 1.2em #1095c1;
  overflow: hidden;
  transition: .3s;
}
.hover-1:hover {
  text-shadow: 
    0 -1.2em #000, 
    0 0 #1095c1;
}

body {
  height: 100vh;
  margin: 0;
  display: grid;
  place-content: center;
}
h3 {
  font-family: system-ui, sans-serif;
  font-size: 3rem;
  margin:0;
  cursor: pointer;
  padding: 0 .1em;
}

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