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HTML 

              
                <div class="page-wrap">
  <header class="page-header">

    <nav>
      <h1>CPC | Travel</h1>
      <ul>
        <li>About Us</li>
        <li>Contact Us</li>
        <li id="burger">
          <span></span>
          <span></span>
          <span></span>
        </li>
      </ul>
    </nav>

    <main>
      <article id="hero-1" style="--i: 5">
        <div class="hero-info">
          <h2>Travel the</h2>
          <h1>World</h1>
          <h3>Pragser Wildsee, Italy</h3>
        </div>
        <div class="hero-image hi-1"></div>
      </article>

      <article id="hero-2" style="--i: 4">
        <div class="hero-info">
          <h2>Savour the</h2>
          <h1>Journey</h1>
          <h3>Marignier, France</h3>
        </div>
        <div class="hero-image hi-2"></div>

      </article>

      <article id="hero-3" style="--i: 3">
        <div class="hero-info">
          <h2>Expand Your</h2>
          <h1>Horizons</h1>
          <h3>Hooker Valley Track, New Zealand</h3>
        </div>
        <div class="hero-image hi-3"></div>

      </article>

      <article id="hero-4" style="--i: 2">
        <div class="hero-info">
          <h2>Explore and</h2>
          <h1>Reflect</h1>
          <h3>Dolmites, Italy</h3>
        </div>
        <div class="hero-image hi-4"></div>

      </article>

      <article id="hero-5" style="--i: 1">
        <div class="hero-info">
          <h2>Change Your</h2>
          <h1>Perspective</h1>
          <h3>Phuket, Thailand</h3>
        </div>
        <div class="hero-image hi-5"></div>
      </article>
    </main>

  </header>

  <section>
    <ul class="level-1">
      <li>
        <h3>Destinations</h3>
        <ul class="level-2">
          <li>
            <p>Asia</p>
            <ul class="level-3">
              <li>Bali</li>
              <li>Cambodia</li>
              <li>Georgia</li>
              <li>India</li>
              <li>Indonesia</li>
              <li>Laos</li>
              <li>Malaysia</li>
              <li>Maldives</li>
              <li>Myanmar</li>
              <li>Philippines</li>
              <li>Singapore</li>
              <li>Sri Lanka</li>
              <li>Thailand</li>
              <li>Uzbekistan</li>
              <li>Vietnam</li>
            </ul>
          </li>
          <li>
            <p>Europe</p>
            <ul class="level-3">
              <li>Czech Republic</li>
              <li>France</li>
              <li>Georgia</li>
              <li>Greece</li>
              <li>Hungary</li>
              <li>Iceland</li>
              <li>Italy</li>
              <li>Malta</li>
              <li>Netherlands</li>
              <li>Poland</li>
              <li>Portugal</li>
              <li>Spain</li>
              <li>Turkey</li>
            </ul>
          </li>
          <li>
            <p>Africa</p>
            <ul class="level-3">
              <li>Egypt</li>
              <li>Maurtius</li>
              <li>Morocco</li>
            </ul>
          </li>
          <li>
            <p>Middle East</p>
            <ul class="level-3">
              <li>Egypt</li>
              <li>Jordan</li>
              <li>Oman</li>
              <li>Turkey</li>
            </ul>
          </li>
        </ul>
      </li>
      <li>
        <h3>Travel Tips</h3>
        <ul>
          <li>Going on a trip</li>
          <li>Travel Insurance</li>
          <li>Working abroad</li>
          <li>Saving</li>
          <li>Instagram tips</li>
        </ul>
        <p><small>More tips...</small></p>
      </li>
      <li>
        <h3>Resources</h3>
        <ul>
          <li>Personalised travel advice</li>
          <li>Where we book our travels</li>
          <li>Become a booking agent</li>
        </ul>
        <p><small>More resources...</small></p>
      </li>
      <li>
        <h3>About Us</h3>
        <ul>
          <li>Our story</li>
          <li>Work with us</li>
          <li>Instagram</li>
          <li>YouTube</li>
        </ul>
      </li>
    </ul>
  </section>

</div>
!

CSS 

              
                @import url("https://fonts.googleapis.com/css2?family=Poppins:wght@400;800&display=swap");

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

body {
  font-family: "Poppins", sans-serif;

  --black: #242424;
  --white: #f5f5f5;
  --pill: #e0d4be;
  --red: #cc033f;
}

ul {
  list-style: none;
}

.page-wrap {
  position: relative;
}

header {
  width: 100%;
  min-height: 100vh;
  overflow-x: hidden;
}

/*  NAV: Top Menu Section
----------------------------------------------- */
nav {
  width: 100%;
  position: fixed;
  z-index: 10;
  padding: 1em 5em;
  display: flex;
  justify-content: space-between;
}
nav h1 {
  font-size: clamp(1.2rem, 6vw, 3rem);
  font-weight: normal;
  text-transform: uppercase;
  color: var(--pill);
  font-size: 1.3rem;
  background-color: var(--red);
  padding: 5px 10px;
}
nav ul {
  display: flex;
  color: var(--white);
}
nav ul li:not(#burger) {
  visibility: hidden;
  margin-right: 1.5em;
}

#burger {
  width: min-content;
  height: 28px;
  display: flex;
  flex-direction: column;
  justify-content: space-evenly;
  cursor: pointer;
}
#burger span {
  display: block;
  height: 3px;
  width: 22px;
  background-color: var(--red);
  border-radius: 200px;
  transition: transform 0.3s 0.3s;
}

.active span:nth-of-type(1) {
  transform: translateY(-3px) scaleX(1.3);
}
.active span:nth-of-type(3) {
  transform: translateY(3px) scaleX(1.3);
}

/*  MAIN: Slider Section
----------------------------------------------- */
main {
  width: 100vw;
  height: 100vh;
  position: relative;
  overflow: hidden;
}
article {
  width: 100%;
  height: 100%;
  position: absolute;
  top: 0;
  left: 0;
  z-index: var(--i);
}

.hero-info {
  position: absolute;
  top: 50%;
  left: 5%;
  transform: translateY(-50%);
  z-index: 8;
}
.hero-info h2 {
  font-size: clamp(2rem, 9vw, 5rem);
  line-height: clamp(2rem, 9vw, 5rem);
  text-transform: uppercase;
}
.hero-info h1 {
  color: var(--white);
  font-size: clamp(3.2rem, 10vw, 7rem);
  line-height: clamp(3.2rem, 10vw, 7rem);
  text-transform: uppercase;
  text-shadow: 2px 2px 6px rgba(0, 0, 0, 0.5);
}
.hero-info h3 {
  color: var(--white);
  font-size: 1.6rem;
  font-weight: normal;
  margin-top: 2em;
}
@supports (-webkit-text-stroke: 3px var(--pill)) {
  .hero-info h2 {
    color: transparent;
    -webkit-text-stroke: 3px var(--pill);
    text-shadow: none;
  }
}

.hero-image {
  width: 100%;
  height: 100%;
  background-size: cover;
  background-position: center;
  background-repeat: no-repeat;
  clip-path: polygon(0% 0%, 100% 0%, 100% 100%, 0% 100%);
}

.hi-1 {
  background-image: url("https://images.unsplash.com/photo-1501785888041-af3ef285b470?ixlib=rb-1.2.1&ixid=MnwxMjA3fDB8MHxwaG90by1wYWdlfHx8fGVufDB8fHx8&auto=format&fit=crop&w=2070&q=80");
}

/* Photo by Lucas Favre
   https://unsplash.com/photos/BRTV55ErUZg
----------------------------------------------- */
.hi-2 {
  background-image: url("https://images.unsplash.com/photo-1517057011470-8f36d636e6ca?ixlib=rb-1.2.1&ixid=MnwxMjA3fDB8MHxwaG90by1wYWdlfHx8fGVufDB8fHx8&auto=format&fit=crop&w=2070&q=80");
}

/* Photo by Roell de Ram
   https://unsplash.com/photos/2DM7eOR5iyc
----------------------------------------------- */
.hi-3 {
  background-image: url("https://images.unsplash.com/flagged/photo-1552035791-b3cc1632e933?ixlib=rb-1.2.1&ixid=MnwxMjA3fDB8MHxwaG90by1wYWdlfHx8fGVufDB8fHx8&auto=format&fit=crop&w=2069&q=80");
}

/* Photo by Go to Bernd Wahlbrinck
   https://unsplash.com/photos/lVVvYiR66kw
----------------------------------------------- */
.hi-4 {
  background-image: url("https://images.unsplash.com/photo-1574700273608-7962d3602a9f?ixlib=rb-1.2.1&ixid=MnwxMjA3fDB8MHxwaG90by1wYWdlfHx8fGVufDB8fHx8&auto=format&fit=crop&w=2070&q=80");
}

/* Photo by Micheal Schofield
   https://unsplash.com/photos/d0ohwP3BRf4
----------------------------------------------- */
.hi-5 {
  background-image: url("https://images.unsplash.com/photo-1605045544284-d13c6d6a60a6?ixlib=rb-1.2.1&ixid=MnwxMjA3fDB8MHxwaG90by1wYWdlfHx8fGVufDB8fHx8&auto=format&fit=crop&w=2070&q=80");
}

/*  SECTION: Overlay Menu Section
----------------------------------------------- */
section {
  position: absolute;
  top: 0;
  left: 0;
  z-index: 9;
  min-height: 100vh;
  padding: 8em 5em 2em 5em;
  background-color: var(--white);
  background-image: url("https://www.transparenttextures.com/patterns/church.png");
  clip-path: polygon(0% 0%, 100% 0%, 100% 0%, 0% 0%);
}

.level-1 {
  display: grid;
  grid-template-columns: 65% 1fr;
  grid-auto-rows: min-content;
  grid-gap: 2em;
}
.level-1 h3 {
  font-weight: 600;
  font-size: 1.8rem;
  text-transform: uppercase;
}
.level-1 p {
  margin: 0.5em 0 0 0.5em;
}
.level-1 p small {
  font-size: 1rem;
  opacity: 0.5;
  cursor: pointer;
}
.level-1 p small:hover {
  opacity: 1;
  color: var(--red);
}
.level-1 ul > li {
  font-size: 1.2rem;
  padding: 0.3em;
  transition: color 0.3s;
}
.level-1 ul > li:hover {
  color: var(--red);
  cursor: pointer;
}
.level-1 li:nth-of-type(1) {
  grid-column: 1/2;
  grid-row: 1/4;
}
.level-1 li:nth-of-type(2) {
  grid-column: 2/3;
  grid-row: 1/2;
}
.level-1 li:nth-of-type(3) {
  grid-column: 2/3;
  grid-row: 2/3;
}
.level-1 li:nth-of-type(4) {
  grid-column: 2/3;
  grid-row: 3/4;
}

.level-2 {
  padding: 0.3em 1em;
}
.level-2 li p {
  color: var(--red);
  font-size: 1.3rem;
  font-weight: 600;
  margin: 1em 0;
  text-transform: uppercase;
  border-bottom: 1px solid #fde0ac;
}

.level-3 {
  display: flex;
  flex-wrap: wrap;
}
.level-3 li {
  padding: 0.5em 1em !important;
  background-color: var(--pill);
  border-radius: 500px;
  margin-right: 10px;
  margin-bottom: 10px;
  font-size: 1rem !important;
  cursor: pointer;
  color: var(--black);
}

@media screen and (max-width: 600px) {
  nav {
    padding: 1em 2em;
  }
  nav h1 {
    font-size: 0.9rem;
  }
  section {
    padding: 8em 2em 2em 2em;
  }
  .level-1 {
    grid-template-columns: 1fr;
  }
  .level-1 li:nth-of-type(1) {
    grid-column: 1/2;
    grid-row: 1/2;
  }
  .level-1 li:nth-of-type(2) {
    grid-column: 1/2;
    grid-row: 2/3;
  }
  .level-1 li:nth-of-type(3) {
    grid-column: 1/2;
    grid-row: 3/4;
  }
  .level-1 li:nth-of-type(4) {
    grid-column: 1/2;
    grid-row: 4/5;
  }
}
!

JS 

              
                let burger = document.getElementById("burger");
let overlay = document.querySelector("section");
let heroImage = document.querySelector(".hero-image");
let showMenu = false;
let del = 3;
let i = 1;

let tl = gsap.timeline({
  repeat: -1,
  yoyo: true,
  ease: "expo.out"
});

overlay.style.display = "none";

burger.addEventListener("click", (e) => {
  showMenu = !showMenu;
  if (showMenu) {
    burger.classList.add("active");
    overlay.style.display = "block";
    gsap.to(overlay, 1, {
      clipPath: "polygon(0% 0%, 100% 0, 100% 100%, 0% 100%)",
      ease: "expo.in"
    });
  } else {
    burger.classList.remove("active");
    gsap.to(overlay, 1, {
      clipPath: "polygon(0% 0%, 100% 0%, 100% 0%, 0% 0%)",
      ease: "expo.out",
      onComplete: () => (overlay.style.display = "none")
    });
  }
});

gsap.set(["#hero-1 h2, #hero-1 h1, #hero-1 h3"], {
  clipPath: "polygon(0% 0%, 100% 0%, 100% 100%, 0% 100%)"
});

gsap.set(
  [
    `#hero-2 h2, #hero-3 h2, #hero-4 h2, #hero-5 h2,
     #hero-2 h1, #hero-3 h1, #hero-4 h1, #hero-5 h1,
     #hero-2 h3, #hero-3 h3, #hero-4 h3, #hero-5 h3`
  ],
  {
    clipPath: "polygon(0% 0%, 0% 0%, 0% 100%, 0% 100%)"
  }
);

while (i < 5) {
  tl.to(`#hero-${i} h2`, 0.9, {
    clipPath: "polygon(0% 0%, 0% 0%, 0% 100%, 0% 100%)",
    delay: del
  })
    .to(
      `#hero-${i} h1`,
      0.9,
      {
        clipPath: "polygon(0% 0%, 0% 0%, 0% 100%, 0% 100%)"
      },
      "-=0.3"
    )
    .to(
      `#hero-${i} h3`,
      0.9,
      {
        clipPath: "polygon(0% 0%, 0% 0%, 0% 100%, 0% 100%)"
      },
      "-=0.3"
    )
    .to(
      `#hero-${i} .hi-${i}`,
      0.7,
      {
        clipPath: "polygon(0% 0%, 0% 0%, 0% 100%, 0% 100%)"
      },
      "-=1"
    )
    .to(`#hero-${i + 1} h2`, 0.9, {
      clipPath: "polygon(0% 0%, 100% 0%, 100% 100%, 0% 100%)"
    })
    .to(
      `#hero-${i + 1} h1`,
      0.9,
      {
        clipPath: "polygon(0% 0%, 100% 0%, 100% 100%, 0% 100%)"
      },
      "-=0.3"
    )
    .to(
      `#hero-${i + 1} h3`,
      0.9,
      {
        clipPath: "polygon(0% 0%, 100% 0%, 100% 100%, 0% 100%)"
      },
      "-=0.3"
    );

  i++;
}
!
999px

Console