Mouse over effect I

 

<h3 class="hover">Hover Me</h3>
<style>
.hover {
  color: #0000;
  background: 
    linear-gradient(90deg,#1095c1 50%,#000 0) 
    var(--_p,100%)/200% no-repeat;
  -webkit-background-clip: text;
          background-clip: text;
  transition: .4s;
}
.hover:hover {
  --_p: 0%;
}

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;
}
</style>