<div class="container">
  <div class="line animation animation--1"></div>
  <div class="line animation animation--2"></div>
  <div class="line animation animation--3"></div>
  <div class="line animation animation--4"></div>
  <div class="line animation animation--5"></div>
  <div class="line animation animation--6"></div>
</div>

:root {
  --width: 2048px;
  --height: calc(var(--width) * 9 / 16);
  --slides: 6;
}

body, html {
  width: 100%;
  min-height: 100vh;
  background: black;
  overflow: hidden;
}

* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
  position: relative;
}

.image {
  width: 100%;
  position: absolute;
  top: 0;
  
  clip: rect(110px, 160px, 170px, 60px);
  clip-path: inset(10px 20px 30px 40px);
}

.container {  
  width: 100%;
  height: var(--height);
  display: flex;
  align-items: center;
  justify-content: center;
  flex-direction: column;
  overflow: hidden;
  
  transform: rotate(-45deg);
}

.line {
  position: relative;
  width: var(--width);  
  height: calc(var(--height) / var(--slides));  
  
  &:before {
    user-select: none;
    content: '';
    display: block;
    height:100%;
    width:100%;
    position: absolute;
    background-size: cover, contain;
    background-image: url(https://conv.cryengine.com/aKidoQnkQ161F7hMO_j0zKt5p5yWfDdY_wNGPm2Iwqw/el:1/aHR0cHM6Ly93d3cuY3J5ZW5naW5lLmNvbS9idWlsZC/9pbWFnZXMvaGVyby1iZy1ob21lLmpwZw.jpg);
  }
  
  &:nth-child(1):before {
    background-position: 0% 0%;
  }
  
  &:nth-child(2):before {
    background-position: 0% calc(100% / (var(--slides) - 1));
  } 
  
  &:nth-child(3):before {
    background-position: 0% calc(100% / (var(--slides) - 1) * 2);
  }
  
  &:nth-child(4):before {
    background-position: 0% calc(100% / (var(--slides) - 1) * 3);
  }
  
  &:nth-child(5):before {
    background-position: 0% calc(100% / (var(--slides) - 1) * 4);
  }
  
  &:nth-child(6):before {
    background-position: 0% calc(100% / (var(--slides) - 1) * 5);
  }
  
  display: block;  
  color: white;
  font-weight: bold;
}

.animation {
  transform: translateX(-100%);
  opacity: 0;
  
  will-change: transform;
  animation: flyIn forwards;
  
  &--1 {
    animation-duration: 1s;
    animation-delay: 0s;
  }
    
  &--2 {
    animation-duration: 1s;
    animation-delay: 0.3s;
  }
  
  &--3 {
    animation-duration: 1s;
    animation-delay: 0.5s;
  }
  
  &--4 {
    animation-duration: 0.7s;
    animation-delay: 0.5s;
  }
  
  &--5 {
    animation-duration: 1s;
    animation-delay: 0.3s;
  }
  
  &--6 {
    animation-duration: 1.2s;
    animation-delay: 0.3s;
  }
}

@keyframes flyIn {
  0% {
    transform: translateX(-100%);
    opacity: 0;
  }
  
  100% {
    transform: translateX(0);
    opacity: 1;
  }
}