body
{
  margin: 0;
  padding: 0;
  display: flex;
  justify-content: center; 
  align-items: center;
  height: 100vh;
  background: #112c38;
}
ul
{
  margin: 0;
  padding: 0;
  display: flex;
}
ul li
{
  list-style: none; 
  margin: 0 20px;
  transition: 0.5s;
}
ul li a
{
  display: block;
  position: relative;
  text-decoration: none;
  padding: 5px;
  font-size: 18px;
  font-family: sans-serif;
  color: #fff;
  text-transform: uppercase;
  transition: 0.5s;
}
ul:hover li a
{
  transform: scale(1.5);
  opacity: .2;
  filter: blur(5px);
}
ul li a:hover
{
  transform: scale(2);
  opacity: 1;
  filter: blur(0);
}
ul li a:before
{
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: #ff497c;
  transition: transform 0.5s;
  transform-origin: right;
  transform: scaleX(0);
  z-index: -1;
}
ul li a:hover:before
{
  transition: transform 0.5s;
  transform-origin: left;
  transform: scaleX(1);
}