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HTML

              
                <script>
  document.body.className = 'hidden';
</script>

<div class="cursor"></div>
<div class="cursor-outer"></div>

<div class="page-head" role="banner">
  <div class="site-logo">
    M
  </div>
  <p class="contrast"><a href="#" class="contrast__link"><span class="contrast__switch"></span><span class="contrast__label">Contrast</span></a></p>
</div>

<div class="grid" role="main">

  <div class="grid__item">

    <h1 class="brand-name">Name of Page</h1>
    <p>Lorem ipsum dolor sit amet, consectetur adipiscing elit, sed do eiusmod tempor incididunt ut labore et dolore magna aliqua. Ut enim ad minim veniam, quis nostrud exercitation ullamco laboris nisi ut aliquip ex ea commodo consequat.</p>

  </div>

  <div class="grid__item gallery">

    <div class="swiper">
      <div class="swiper-wrapper">
        <div class="swiper-slide" data-caption="Caption #1">
          <img src="https://www.fillmurray.com/700/1000" />
        </div>
        <div class="swiper-slide" data-caption="Caption #2">
          <img src="https://www.fillmurray.com/700/1100" />
        </div>
        <div class="swiper-slide" data-caption="Caption #3">
          <img src="https://www.fillmurray.com/700/1200" />
        </div>
      </div>
      <a class="swiper-button-prev" data-interaction="cursor-prev"></a>
      <a class="swiper-button-next" data-interaction="cursor-next"></a>
    </div>

  </div>

  <div class="page-foot" role="contentinfo">
    <p class="swiper-caption">Caption Goes Here</p>
    <p class="swiper-pagination"></p>
  </div>

</div>
              
            
!

CSS

              
                /* #GLOBAL */

body.hidden {
  opacity: 0;
}

body.visible {
  opacity: 1;
  transition: opacity 0.48s ease-out;
}

html {
	background: white;
	font-size: 62.5%;
	height: 100vh;
	height: var(--app-height);
	-webkit-font-smoothing: antialiased;
	-moz-osx-font-smoothing: grayscale;
	-webkit-overflow-scrolling: touch;
	-webkit-tap-highlight-color: transparent;
	-webkit-text-size-adjust: 100%;
}

/**
 * Base `body` styling.
 */

body {
	background-color: transparent;
	font-variant-ligatures: common-ligatures discretionary-ligatures historical-ligatures;
  font-size: 16px;
	height: 100vh;
	height: var(--app-height);
	margin: 0;
	padding: 0;
	text-rendering: optimizeLegibility;
}

h1,
p {
  margin: 0 0 24px;
  padding: 0;
}

/* #HEAD (left column) */

.page-head {
  border-bottom: 2px solid black;
  box-sizing: border-box;
  display: flex;
  align-items: center;
  height: 64px;
  padding: 0 24px;
  position: fixed;
  bottom: -64px;
  left: 0;
  transform: rotate(-90deg);
  transform-origin: top left;
  width: 100vh;
}

.site-logo {
  display: flex;
  align-items: center;
  justify-content: center;
  height: 32px;
  order: 1;
  stroke: black;
  transform: rotate(90deg);
  width: 32px;

  svg {
    overflow: visible;
  }
}

.contrast {
  display: flex;
  align-items: center;
  flex: 1 1 0%;
  margin-bottom: 0;
  justify-content: flex-start;
}

/* #GRID */

.grid {
  display: flex;
  flex-direction: column;
  height: 100vh;
}

.grid__item {
  box-sizing: border-box;
  padding: 24px 24px 0;
  margin-left: 64px;
}

.gallery {
  box-sizing: border-box;
  flex: 1;
  overflow: hidden;
  position: relative;
  padding: 0 24px 24px;
  text-align: center;
}

.gallery img {
  border: 2px solid black;
  box-sizing: border-box;
  height: 100%;
  max-height: 100%;
  object-fit: cover;
  object-position: top center;
  width: 100%;
  max-width: 100%;
}

/**
 * Side-by-side view for wider devices.
 */

.grid {
	display: flex;
	flex-direction: column;
	height: 100vh;
	height: var(--app-height);
}

/**
 * Grid Cells.
 */

.grid__item {
	box-sizing: border-box;
	padding: 48px 48px 0;
	margin-left: 48px;
	
	@media only screen and (min-width: 1000px) {
		margin-left: 0;
	}
}

.gallery {
	box-sizing: border-box;
	flex: 1;
	overflow: hidden;
	position: relative;
	padding: 0 24px 24px;
	text-align: center;
}


.gallery img {
	border: 2px solid black;
	box-sizing: border-box;
	height: 100%;
	max-height: 100%;
	object-fit: cover;
	object-position: top center;
	width: 100%;
	max-width: 100%;
	
	@media only screen and (min-width: 1000px) {
		width: auto;
	}
}

/**
 * Side-by-side view for wider devices.
 */
	
@media only screen and (min-width: 1000px) {

	.grid {
	  background-color: black;
	  flex-direction: row;
	  column-gap: 2px;
	  height: 100vh;
	  margin: 0 48px;
	}
	
	.grid__item {
	  background-color: white;
	  transition: width .12s;
	  width: 33.333333%;
	  height: 100vh;
	}
	
	.gallery {
		padding-top: 24px;
	}
	
	.gallery img {
		height: 100%; // Was Auto to keep aspect-ratio
		max-height: 100%;
		//object-fit: initial;
		width: auto;
		max-width: 100%;
	}
}

@media only screen and (min-width: 1000px) {
	
	.grid__item {
	  width: 50%;
	}
}




@media screen and (max-height: 600px) {

	.grid {
		height: auto;
	}
	
	.grid__item {
		height: auto;
	} 
		  
}

/* #FOOTER (right column) */

.page-foot {
  margin-left: 64px;
  padding: 0 24px;
}

.swiper-pagination {
  display: none;
}

@media only screen and (min-width: 1000px) {
  
  .page-foot {
    border-bottom: 2px solid black;
    box-sizing: border-box;
    display: flex;
    height: 64px;
    padding: 0 24px;
    position: fixed;
    bottom: -64px;
    left: 0;
    transform: rotate(-90deg);
    transform-origin: top left;
    width: 100vh;
    left: auto;
    right: 0;
    transform: rotate(90deg);
    transform-origin: top right;

    p {
      display: flex;
      align-items: center;
      margin-bottom: 0;
    }
  }

  .swiper-caption {
    flex: 1 1 0%;
  }
}





/* CURSOR */

* {
  cursor: none !important;
}

body:hover {
  .cursor-outer {
    border-color: black;
  }

  .cursor {
    background-color: black;
  }
}

.cursor-outer {
  border: 2px solid transparent;
  border-radius: 100%;
  box-sizing: border-box;
  height: 32px;
  pointer-events: none;
  position: fixed;
  margin: 16px 0 0 16px;
  transform: translate(-50%, -50%);
  transition: border-color 0.12s ease-out, height 0.12s ease-out,
    top 0.12s ease-out, left 0.12s ease-out, opacity 0.12s ease-out,
    width 0.12s ease-out;
  width: 32px;
  z-index: 10000;
}

.cursor {
  background-color: transparent;
  border-radius: 100%;
  height: 4px;
  position: fixed;
  transform: translate(-50%, -50%);
  pointer-events: none;
  transition: background-color 0.12s ease-out, height 0.12s, opacity 0.12s,
    width 0.12s;
  width: 4px;
  z-index: 10000;
}

.hover {
  height: 4px;
  opacity: 0;
  width: 4px;
}

.cursorinnerhover {
  height: 0;
  width: 0;
}

/* Prev */

.cursor-prev,
.cursor-next {
  border-radius: 0;
  height: 2px;
  transition: height 0.12s, opacity 0.12s, transform 0.12s, width 0.12s;
  transform-origin: center center;
  width: 32px;

  &:before,
  &:after {
    background: black;
    content: "";
    display: block;
    height: 2px;
    opacity: 0;
    width: 16px;
    position: absolute;
    transform-origin: center left;
  }

  &:before {
    animation: cursor-prev 0.12s ease-in-out 0.32s forwards;
  }
  &:after {
    animation: cursor-next 0.12s ease-in-out 0.32s forwards;
  }
}

.cursor-next {
  transform: rotate(180deg);
}

@keyframes cursor-prev {
  0% {
    transform: rotate(0);
  }

  100% {
    opacity: 1;
    transform: rotate(-45deg);
  }
}

@keyframes cursor-next {
  0% {
    transform: rotate(0);
  }

  100% {
    opacity: 1;
    transform: rotate(45deg);
  }
}

/* SWIPER */

.swiper {
	height: 100%; // Fits image in viewport
	position: relative;
	//overflow: hidden; // Removed which seems to help border getting cut off
	touch-action: pan-y;
	z-index: 1; // Fix of Webkit flickering
	-webkit-user-select: none; // Fixes issue in Safari when clicking carousel quickly, page is highlighted black.
}

.swiper-wrapper {
	box-sizing: border-box;
	display: flex;
	height: 100%;
	position: relative;
	width: 100%;
	z-index: 1;
}

.swiper-slide {
	backface-visibility: hidden;
	flex-shrink: 0;
	height: 100%;
	max-height: 100%; // Added myself
	pointer-events: none;
	position: relative;
	transform: translateZ(0);
	transition: opacity 12ms ease-out !important;
	width: 100%;
}

.swiper-slide-active {
  pointer-events: auto;
}

.swiper-button-prev,
.swiper-button-next {
	background: none;
	display: flex;
	align-items: center;
	justify-content: center;
	height: 100%;
	position: absolute;
	top: 0;
	width: 50%;
	z-index: 10;
	
	&:focus {
		outline: 0;
	}
}

.swiper-button-prev {
  left: 0;
}

.swiper-button-next {
  right: 0;
}

.swiper-pagination-current {
	margin-right: 4px;
}

.swiper-pagination-total {
	margin-left: 2px;
}
              
            
!

JS

              
                /* FADE IN WHEN CONTENT LOADED */

window.addEventListener("DOMContentLoaded", function () {
  document.body.className = "visible";
});





/* CAROUSEL */

var caption = document.querySelector(".swiper-caption");

new Swiper(".swiper", {
  // Disable preloading of all images
  preloadImages: false,
  // Enable lazy loading
  lazy: true,
  effect: "fade",
  fadeEffect: {
    crossFade: true
  },
  loop: true,
  autoplay: {
    delay: 1200,
    disableOnInteraction: false,
    pauseOnMouseEnter: true
  },
  navigation: {
    nextEl: ".swiper-button-next",
    prevEl: ".swiper-button-prev"
  },
  pagination: {
    el: ".swiper-pagination",
    type: "fraction"
  },
  on: {
    init: function () {
      updateCaptionText(this);
    },
    activeIndexChange: function () {
      updateCaptionText(this);
    }
  }
});

function updateCaptionText(slider) {
  caption.textContent = slider.slides[slider.activeIndex].dataset.caption;
}





/* CUSTOM CURSOR */

var cursor = document.querySelector(".cursor-outer");
var cursorinner = document.querySelector(".cursor");
var a = document.querySelectorAll("a");

var moveCursor = true;
var radiusOfCursor =
  parseInt(getComputedStyle(cursor).getPropertyValue("width")) / 2; // radiusOfCursor = (width_of_cursor / 2).

document.addEventListener("mousemove", function (e) {
  var x = e.clientX;
  var y = e.clientY;
  cursorinner.style.left = x + "px";
  cursorinner.style.top = y + "px";

  if (!moveCursor) return;

  cursor.style.left = `calc(${e.clientX}px - ${radiusOfCursor}px)`;
  cursor.style.top = `calc(${e.clientY}px - ${radiusOfCursor}px)`;

  moveCursor = false;

  setTimeout(() => {
    moveCursor = true;
  }, 12); // The wait time. I chose 95 because it seems to work just fine for me.
});

/* Centre pointer after stopping */

function mouseMoveEnd() {
  cursor.style.left = `calc(${cursorinner.style.left} - ${radiusOfCursor}px)`;
  cursor.style.top = `calc(${cursorinner.style.top} - ${radiusOfCursor}px)`;
}

var x;
document.addEventListener(
  "mousemove",
  function () {
    if (x) clearTimeout(x);
    x = setTimeout(mouseMoveEnd, 10);
  },
  false
);

/* End */

document.addEventListener("mousedown", function () {
  cursor.classList.add("click");
  cursorinner.classList.add("cursorinnerhover");
});

document.addEventListener("mouseup", function () {
  cursor.classList.remove("click");
  cursorinner.classList.remove("cursorinnerhover");
});

a.forEach((item) => {
  item.addEventListener("mouseover", () => {
    cursor.classList.add("hover");
  });
  item.addEventListener("mouseleave", () => {
    cursor.classList.remove("hover");
  });
});

a.forEach((item) => {
  const interaction = item.dataset.interaction;

  item.addEventListener("mouseover", () => {
    cursorinner.classList.add(interaction);
  });
  item.addEventListener("mouseleave", () => {
    cursorinner.classList.remove(interaction);
  });
});


              
            
!
999px

Console