:root {
  --ease-in-quad:       cubic-bezier(.55, .085, .68, .53);
  --ease-in-cubic:      cubic-bezier(.55, .055, .675, .19);
  --ease-in-quart:      cubic-bezier(.895, .03, .685, .22);
  --ease-in-quint:      cubic-bezier(.755, .05, .855, .06);
  --ease-in-expo:       cubic-bezier(.95, .05, .795, .035);
  --ease-in-circ:       cubic-bezier(.6, .04, .98, .335);
  --ease-out-quad:      cubic-bezier(.25, .46, .45, .94);
  --ease-out-cubic:     cubic-bezier(.215, .61, .355, 1);
  --ease-out-quart:     cubic-bezier(.165, .84, .44, 1);
  --ease-out-quint:     cubic-bezier(.23, 1, .32, 1);
  --ease-out-expo:      cubic-bezier(.19, 1, .22, 1);
  --ease-out-circ:      cubic-bezier(.075, .82, .165, 1);
  --ease-in-out-quad:   cubic-bezier(.455, .03, .515, .955);
  --ease-in-out-cubic:  cubic-bezier(.645, .045, .355, 1);
  --ease-in-out-quart:  cubic-bezier(.77, 0, .175, 1);
  --ease-in-out-quint:  cubic-bezier(.86, 0, .07, 1);
  --ease-in-out-expo:   cubic-bezier(1, 0, 0, 1);
  --ease-in-out-circ:   cubic-bezier(.785, .135, .15, .86);
}

h1 {
  -webkit-animation: pulse 5s var(--ease-in-out-expo) infinite;
          animation: pulse 5s var(--ease-in-out-expo) infinite
}

@-webkit-keyframes pulse {
  50% {
    -webkit-transform: scale(2);
            transform: scale(2)
  }
}

@keyframes pulse {
  50% {
    -webkit-transform: scale(2);
            transform: scale(2)
  }
}

html {
  block-size: 100%;
  inline-size: 100%;
}

body {
  min-block-size: 100%;
  min-inline-size: 100%;
  box-sizing: border-box;
  display: grid;
  place-content: center;
  font-family: system-ui;
  color: deeppink;
}