<h2 class="border">wavy</h2>
<h2 class="wave">wavy</h2>

<h2 class="border two">wavy</h2>
<h2 class="wave two">wavy</h2>

<h2 class="border three">wavy</h2>
<h2 class="wave three">wavy</h2>

@import url('https://fonts.googleapis.com/css2?family=Work+Sans:wght@400;500;600;700&display=swap');

* {
  margin: 0;
  padding: 0;
}

body {
  font-family: "Work Sans", sans-serif;
  letter-spacing: 2vmin;
  background: black;
  display: flex;  
  height: 100vh;
  width: 100vw;
  align-items: center;
  justify-content: center;
}

h2 {
  font-size: 15vmin;
  position: absolute;
}

.border {
  color: black;  
  text-shadow:
    -1px -1px 0 white, 
    1px -1px 0 white,
    -1px 1px 0 white,
    1px 1px 0 white;  
}

.wave {
  color: white;
  animation: wave 3s ease-in-out infinite;
}

.two {
  transform: translateY(0.8em);
}

.three {
  transform: translateY(-0.8em);
}

@keyframes wave {
  0%, 100% {
    clip-path: polygon(0% 47%, 10% 48%, 33% 54%, 54% 60%, 70% 61%, 84% 59%, 100% 52%, 100% 100%, 0% 100%);
  }

  50% {
    clip-path: polygon(0% 60%, 15% 65%, 34% 66%, 51% 62%, 67% 50%, 84% 45%, 100% 46%, 100% 100%, 0% 100%);
  }
}