<h1 data-text= "Spotlight">
Spotlight</h1>

body{
  background: linear-gradient(#f70000, #f89200, #f8f501, #038f00,#0168f8, #a200f7);
}
h1{
  font-family: 'Teko', sans-serif;
  text-transform: uppercase;
  font-size: 10rem;
  text-align: center;
  display: -webkit-flex;
  display: flex;
  -webkit-align-items: center;
  align-items: center;
  -webkit-justify-content: center;
  justify-content: center;
  margin: 0;
  min-height: calc(100vh - 16px);
  background: white;
  position: relative;
  background: #171717;
  color: #000;
}

h1:before{
  content: attr(data-text);
  position: absolute;
  background: linear-gradient(#f70000, #f89200, #f8f501, #038f00,#0168f8, #a200f7);
  -webkit-background-clip: text;
  color: transparent;
  background-size: 100% 90%;
  line-height: 0.9;
  clip-path: ellipse(120px 120px at -2.54% -9.25%);
  animation: swing 5s infinite;
  animation-direction: alternate;
}

@keyframes swing{
  0%{
     -webkit-clip-path: ellipse(120px 120px at -2.54% -9.25%)
    clip-path: ellipse(120px 120px at -2.54% -9.25%)
  }
  50%{
    -webkit-clip-path: ellipse(120px 120px at 49.66% 64.36%);
    clip-path: ellipse(120px 120px at 49.66% 64.36%);

  }
  100%{
     -webkit-clip-path: ellipse(120px 120px at 102.62% -1.61%;);
    clip-path: ellipse(120px 120px at 102.62% -1.61%);
  }
}