Как называется плагин на jquery

.header { 
  background: center no-repeat; 
  background-size: cover; 
  height: 170px; 
  width: 100%; 
  box-sizing: border-box; 
  padding: 20px 35px; 
  overflow: hidden; 
} 
 
.header { 
  position: fixed; 
  top: 0; 
  left: 0; 
  width: 100%; 
  z-index: 1000; 
  transition: height .35s; 
} 
 
.header.original { 
  visibility: visible !important; 
} 
 
.header__background { 
  position: absolute; 
  width: 100%; 
  height: 100%; 
  top: 0; 
  left: 0; 
  -webkit-animation: zoom-background 15s infinite alternate linear; 
  animation: zoom-background 15s infinite alternate linear; 
} 
 
@-webkit-keyframes zoom-background { 
  0% { 
    -webkit-transform: scale(1); 
    transform: scale(1) 
  } 
  100% { 
    -webkit-transform: scale(1.5); 
    transform: scale(1.5) 
  } 
} 
 
@keyframes zoom-background { 
  0% { 
    -webkit-transform: scale(1); 
    transform: scale(1) 
  } 
  100% { 
    -webkit-transform: scale(1.5); 
    transform: scale(1.5) 
  } 
}

<header class="header original" style="visibility: visible;"> 
  <div class="header__background" style="background-image: url(https://omoloko.icecream-chl.ru/images/omoloko/header_bg/6.jpg);"></div> 
</header>