.hoverme
{
position: relative;
width: 100%;
height: 250px;
background-color: gold;
}
.hoverme div
{
position: absolute;
left: 50%;
top: 50%;
transform: translate(-50%,-50%);
cursor: pointer;
font-size: 5rem;
}
.hoverme div::before
{
content: " ";
display: block;
position: absolute;
top: 0; right: 0; bottom: 0; left: 0;
inset: 0 0 0 0;
background: hsl(200 100% 80%);
z-index: -1;
transition: transform .3s ease;
transform: scaleX(0);
transform-origin: bottom right;
}
.hoverme div:hover::before {transform: scaleX(1); transform-origin: bottom left;}
echo "<div class='hoverme'>";
echo "<div>Hover</div>";
echo "</div>";