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HTML

              
                <div class="hamburger-menu">
  <button class="burger" data-state="closed">
    <span></span>
    <span></span>
    <span></span>
  </button>
</div>
<nav data-state="closed">
  <ul>
  <li>
    <a href="#">Home</a>
  </li>
  <li>
    <a href="#">Services</a>
  </li>
  <li>
    <a href="#">About</a>
  </li>
  <li>
    <a href="#">Contact</a>
  </li>
  </ul>
</nav>
<main>
  <div class="container">
    <div class="row">
      <div class="col-md-6 align-self-center">
        <svg version="1.1" xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink"
          viewBox="0 0 800 600">
          <g>
            <defs>
              <clipPath id="GlassClip">
                <path
                  d="M380.857,346.164c-1.247,4.651-4.668,8.421-9.196,10.06c-9.332,3.377-26.2,7.817-42.301,3.5
                s-28.485-16.599-34.877-24.192c-3.101-3.684-4.177-8.66-2.93-13.311l7.453-27.798c0.756-2.82,3.181-4.868,6.088-5.13
                c6.755-0.61,20.546-0.608,41.785,5.087s33.181,12.591,38.725,16.498c2.387,1.682,3.461,4.668,2.705,7.488L380.857,346.164z" />
              </clipPath>
              <clipPath id="cordClip">
                <rect width="800" height="600" />
              </clipPath>
            </defs>

            <g id="planet">
              <circle fill="none" stroke="#0E0620" stroke-width="3" stroke-miterlimit="10" cx="572.859" cy="108.803"
                r="90.788" />

              <circle id="craterBig" fill="none" stroke="#0E0620" stroke-width="3" stroke-miterlimit="10" cx="548.891"
                cy="62.319" r="13.074" />

              <circle id="craterSmall" fill="none" stroke="#0E0620" stroke-width="3" stroke-miterlimit="10" cx="591.743"
                cy="158.918" r="7.989" />
              <path id="ring" fill="none" stroke="#0E0620" stroke-width="3" stroke-linecap="round"
                stroke-miterlimit="10" d="
			M476.562,101.461c-30.404,2.164-49.691,4.221-49.691,8.007c0,6.853,63.166,12.408,141.085,12.408s141.085-5.555,141.085-12.408
			c0-3.378-15.347-4.988-40.243-7.225" />

              <path id="ringShadow" opacity="0.5" fill="none" stroke="#0E0620" stroke-width="3" stroke-linecap="round"
                stroke-miterlimit="10" d="
			M483.985,127.43c23.462,1.531,52.515,2.436,83.972,2.436c36.069,0,68.978-1.19,93.922-3.149" />
            </g>
            <g id="stars">
              <g id="starsBig">
                <g>

                  <line fill="none" stroke="#0E0620" stroke-width="3" stroke-linecap="round" stroke-miterlimit="10"
                    x1="518.07" y1="245.375" x2="518.07" y2="266.581" />

                  <line fill="none" stroke="#0E0620" stroke-width="3" stroke-linecap="round" stroke-miterlimit="10"
                    x1="508.129" y1="255.978" x2="528.01" y2="255.978" />
                </g>
                <g>

                  <line fill="none" stroke="#0E0620" stroke-width="3" stroke-linecap="round" stroke-miterlimit="10"
                    x1="154.55" y1="231.391" x2="154.55" y2="252.598" />

                  <line fill="none" stroke="#0E0620" stroke-width="3" stroke-linecap="round" stroke-miterlimit="10"
                    x1="144.609" y1="241.995" x2="164.49" y2="241.995" />
                </g>
                <g>

                  <line fill="none" stroke="#0E0620" stroke-width="3" stroke-linecap="round" stroke-miterlimit="10"
                    x1="320.135" y1="132.746" x2="320.135" y2="153.952" />

                  <line fill="none" stroke="#0E0620" stroke-width="3" stroke-linecap="round" stroke-miterlimit="10"
                    x1="310.194" y1="143.349" x2="330.075" y2="143.349" />
                </g>
                <g>

                  <line fill="none" stroke="#0E0620" stroke-width="3" stroke-linecap="round" stroke-miterlimit="10"
                    x1="200.67" y1="483.11" x2="200.67" y2="504.316" />

                  <line fill="none" stroke="#0E0620" stroke-width="3" stroke-linecap="round" stroke-miterlimit="10"
                    x1="210.611" y1="493.713" x2="190.73" y2="493.713" />
                </g>
              </g>
              <g id="starsSmall">
                <g>

                  <line fill="none" stroke="#0E0620" stroke-width="3" stroke-linecap="round" stroke-miterlimit="10"
                    x1="432.173" y1="380.52" x2="432.173" y2="391.83" />

                  <line fill="none" stroke="#0E0620" stroke-width="3" stroke-linecap="round" stroke-miterlimit="10"
                    x1="426.871" y1="386.175" x2="437.474" y2="386.175" />
                </g>
                <g>

                  <line fill="none" stroke="#0E0620" stroke-width="3" stroke-linecap="round" stroke-miterlimit="10"
                    x1="489.555" y1="299.765" x2="489.555" y2="308.124" />

                  <line fill="none" stroke="#0E0620" stroke-width="3" stroke-linecap="round" stroke-miterlimit="10"
                    x1="485.636" y1="303.945" x2="493.473" y2="303.945" />
                </g>
                <g>

                  <line fill="none" stroke="#0E0620" stroke-width="3" stroke-linecap="round" stroke-miterlimit="10"
                    x1="231.468" y1="291.009" x2="231.468" y2="299.369" />

                  <line fill="none" stroke="#0E0620" stroke-width="3" stroke-linecap="round" stroke-miterlimit="10"
                    x1="227.55" y1="295.189" x2="235.387" y2="295.189" />
                </g>
                <g>

                  <line fill="none" stroke="#0E0620" stroke-width="3" stroke-linecap="round" stroke-miterlimit="10"
                    x1="244.032" y1="547.539" x2="244.032" y2="555.898" />

                  <line fill="none" stroke="#0E0620" stroke-width="3" stroke-linecap="round" stroke-miterlimit="10"
                    x1="247.95" y1="551.719" x2="240.113" y2="551.719" />
                </g>
                <g>

                  <line fill="none" stroke="#0E0620" stroke-width="3" stroke-linecap="round" stroke-miterlimit="10"
                    x1="186.359" y1="406.967" x2="186.359" y2="415.326" />

                  <line fill="none" stroke="#0E0620" stroke-width="3" stroke-linecap="round" stroke-miterlimit="10"
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                </g>
                <g>

                  <line fill="none" stroke="#0E0620" stroke-width="3" stroke-linecap="round" stroke-miterlimit="10"
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                  <line fill="none" stroke="#0E0620" stroke-width="3" stroke-linecap="round" stroke-miterlimit="10"
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                </g>
              </g>
              <g id="circlesBig">

                <circle fill="none" stroke="#0E0620" stroke-width="3" stroke-linecap="round" stroke-miterlimit="10"
                  cx="588.977" cy="255.978" r="7.952" />

                <circle fill="none" stroke="#0E0620" stroke-width="3" stroke-linecap="round" stroke-miterlimit="10"
                  cx="450.066" cy="320.259" r="7.952" />

                <circle fill="none" stroke="#0E0620" stroke-width="3" stroke-linecap="round" stroke-miterlimit="10"
                  cx="168.303" cy="353.753" r="7.952" />

                <circle fill="none" stroke="#0E0620" stroke-width="3" stroke-linecap="round" stroke-miterlimit="10"
                  cx="429.522" cy="201.185" r="7.952" />

                <circle fill="none" stroke="#0E0620" stroke-width="3" stroke-linecap="round" stroke-miterlimit="10"
                  cx="200.67" cy="176.313" r="7.952" />

                <circle fill="none" stroke="#0E0620" stroke-width="3" stroke-linecap="round" stroke-miterlimit="10"
                  cx="133.343" cy="477.014" r="7.952" />

                <circle fill="none" stroke="#0E0620" stroke-width="3" stroke-linecap="round" stroke-miterlimit="10"
                  cx="283.521" cy="568.033" r="7.952" />

                <circle fill="none" stroke="#0E0620" stroke-width="3" stroke-linecap="round" stroke-miterlimit="10"
                  cx="413.618" cy="482.387" r="7.952" />
              </g>
              <g id="circlesSmall">
                <circle fill="#0E0620" cx="549.879" cy="296.402" r="2.651" />
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                <circle fill="#0E0620" cx="480.296" cy="477.014" r="2.651" />
              </g>
            </g>
            <g id="spaceman" clip-path="url(cordClip)">
              <path id="cord" fill="none" stroke="#0E0620" stroke-width="3" stroke-linecap="round"
                stroke-linejoin="round" stroke-miterlimit="10"
                d="
			M273.813,410.969c0,0-54.527,39.501-115.34,38.218c-2.28-0.048-4.926-0.241-7.841-0.548
			c-68.038-7.178-134.288-43.963-167.33-103.87c-0.908-1.646-1.793-3.3-2.654-4.964c-18.395-35.511-37.259-83.385-32.075-118.817" />

              <path id="backpack" fill="#FFFFFF" stroke="#0E0620" stroke-width="3" stroke-linecap="round"
                stroke-linejoin="round" stroke-miterlimit="10" d="
			M338.164,454.689l-64.726-17.353c-11.086-2.972-17.664-14.369-14.692-25.455l15.694-58.537
			c3.889-14.504,18.799-23.11,33.303-19.221l52.349,14.035c14.504,3.889,23.11,18.799,19.221,33.303l-15.694,58.537
			C360.647,451.083,349.251,457.661,338.164,454.689z" />
              <g id="antenna">
                <line fill="#FFFFFF" stroke="#0E0620" stroke-width="3" stroke-linecap="round" stroke-linejoin="round"
                  stroke-miterlimit="10" x1="323.396" y1="236.625" x2="295.285" y2="353.753" />
                <circle fill="#FFFFFF" stroke="#0E0620" stroke-width="3" stroke-linecap="round" stroke-linejoin="round"
                  stroke-miterlimit="10" cx="323.666" cy="235.617" r="6.375" />
              </g>
              <g id="armR">

                <path fill="#FFFFFF" stroke="#0E0620" stroke-width="3" stroke-linecap="round" stroke-linejoin="round"
                  stroke-miterlimit="10" d="
				M360.633,363.039c1.352,1.061,4.91,5.056,5.824,6.634l27.874,47.634c3.855,6.649,1.59,15.164-5.059,19.02l0,0
				c-6.649,3.855-15.164,1.59-19.02-5.059l-5.603-9.663" />

                <path fill="#FFFFFF" stroke="#0E0620" stroke-width="3" stroke-linecap="round" stroke-linejoin="round"
                  stroke-miterlimit="10" d="
				M388.762,434.677c5.234-3.039,7.731-8.966,6.678-14.594c2.344,1.343,4.383,3.289,5.837,5.793
				c4.411,7.596,1.829,17.33-5.767,21.741c-7.596,4.411-17.33,1.829-21.741-5.767c-1.754-3.021-2.817-5.818-2.484-9.046
				C375.625,437.355,383.087,437.973,388.762,434.677z" />
              </g>
              <g id="armL">

                <path fill="#FFFFFF" stroke="#0E0620" stroke-width="3" stroke-linecap="round" stroke-linejoin="round"
                  stroke-miterlimit="10" d="
				M301.301,347.66c-1.702,0.242-5.91,1.627-7.492,2.536l-47.965,27.301c-6.664,3.829-8.963,12.335-5.134,18.999h0
				c3.829,6.664,12.335,8.963,18.999,5.134l9.685-5.564" />

                <path fill="#FFFFFF" stroke="#0E0620" stroke-width="3" stroke-linecap="round" stroke-linejoin="round"
                  stroke-miterlimit="10" d="
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              </g>
              <g id="body">

                <path fill="#FFFFFF" stroke="#0E0620" stroke-width="3" stroke-linecap="round" stroke-linejoin="round"
                  stroke-miterlimit="10" d="
				M353.351,365.387c-7.948,1.263-16.249,0.929-24.48-1.278c-8.232-2.207-15.586-6.07-21.836-11.14
				c-17.004,4.207-31.269,17.289-36.128,35.411l-1.374,5.123c-7.112,26.525,8.617,53.791,35.13,60.899l0,0
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                <path fill="none" stroke="#0E0620" stroke-width="3" stroke-linecap="round" stroke-linejoin="round"
                  stroke-miterlimit="10" d="
				M269.678,394.912L269.678,394.912c26.3,20.643,59.654,29.585,93.106,25.724l2.419-0.114" />
              </g>
              <g id="legs">
                <g id="legR">

                  <path fill="#FFFFFF" stroke="#0E0620" stroke-width="3" stroke-linecap="round" stroke-linejoin="round"
                    stroke-miterlimit="10" d="
					M312.957,456.734l-14.315,53.395c-1.896,7.07,2.299,14.338,9.37,16.234l0,0c7.07,1.896,14.338-2.299,16.234-9.37l17.838-66.534
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                  <line fill="none" stroke="#0E0620" stroke-width="3" stroke-linecap="round" stroke-linejoin="round"
                    stroke-miterlimit="10" x1="304.883" y1="486.849" x2="330.487" y2="493.713" />
                </g>
                <g id="legL">

                  <path fill="#FFFFFF" stroke="#0E0620" stroke-width="3" stroke-linecap="round" stroke-linejoin="round"
                    stroke-miterlimit="10" d="
					M296.315,452.273L282,505.667c-1.896,7.07-9.164,11.265-16.234,9.37l0,0c-7.07-1.896-11.265-9.164-9.37-16.234l17.838-66.534
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                  <line fill="none" stroke="#0E0620" stroke-width="3" stroke-linecap="round" stroke-linejoin="round"
                    stroke-miterlimit="10" x1="262.638" y1="475.522" x2="288.241" y2="482.387" />
                </g>
              </g>
              <g id="head">

                <ellipse transform="matrix(0.259 -0.9659 0.9659 0.259 -51.5445 563.2371)" fill="#FFFFFF"
                  stroke="#0E0620" stroke-width="3" stroke-linecap="round" stroke-linejoin="round"
                  stroke-miterlimit="10" cx="341.295" cy="315.211" rx="61.961" ry="60.305" />
                <path id="headStripe" fill="none" stroke="#0E0620" stroke-width="3" stroke-linecap="round"
                  stroke-linejoin="round" stroke-miterlimit="10" d="
				M330.868,261.338c-7.929,1.72-15.381,5.246-21.799,10.246" />

                <path fill="#FFFFFF" stroke="#0E0620" stroke-width="3" stroke-linecap="round" stroke-linejoin="round"
                  stroke-miterlimit="10" d="
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				c-3.101-3.684-4.177-8.66-2.93-13.311l7.453-27.798c0.756-2.82,3.181-4.868,6.088-5.13c6.755-0.61,20.546-0.608,41.785,5.087
				s33.181,12.591,38.725,16.498c2.387,1.682,3.461,4.668,2.705,7.488L380.857,346.164z" />
                <g clip-path="url(#GlassClip)">
                  <polygon id="glassShine" fill="none" stroke="#0E0620" stroke-width="3" stroke-miterlimit="10" points="
					278.436,375.599 383.003,264.076 364.393,251.618 264.807,364.928 				" />
                </g>
              </g>
            </g>
          </g>
        </svg>
      </div>
      <div class="col-md-6 align-self-center">
        <h1>404</h1>
        <h2>UH OH! You're lost.</h2>
        <p>The page you are looking for does not exist.
          How you got here is a mystery. But you can click the button below
          to go back to the homepage.
        </p>
        <button class="btn green">HOME</button>
      </div>
    </div>
  </div>
</main>
              
            
!

CSS

              
                @import url('https://fonts.googleapis.com/css?family=Nunito+Sans');
:root {
  --blue: #0e0620;
  --white: #fff;
  --green: #2ccf6d;
}
html,
body {
  height: 100%;
}
body {
  display: flex;
  align-items: center;
  justify-content: center;
  font-family:"Nunito Sans";
  color: var(--blue);
  font-size: 1em;
}
button {
  font-family:"Nunito Sans";
}
ul {
  list-style-type: none;
  padding-inline-start: 35px;
}
svg {
  width: 100%;
  visibility: hidden;
}
h1 {
  font-size: 7.5em;
  margin: 15px 0px;
  font-weight:bold;
}
h2 {
  font-weight:bold;
}
.hamburger-menu {
  position: absolute;
  top: 0;
  left: 0;
  padding: 35px;
  z-index: 2;

  & button {
    position: relative;
    width: 30px;
    height: 22px;
    border: none;
    background: none;
    padding: 0;
    cursor: pointer;

    & span {
      position: absolute;
      height: 3px;
      background: #000;
      width: 100%;
      left: 0px;
      top: 0px;
      transition: 0.1s ease-in;
      &:nth-child(2) {
        top: 9px;
      }
      &:nth-child(3) {
        top: 18px;
      }
    }
  }
  & [data-state="open"] {
    & span {
      &:first-child {
        transform: rotate(45deg);
        top: 10px;
      }
      &:nth-child(2) {
        width: 0%;
        opacity:0;
      }
      &:nth-child(3) {
        transform: rotate(-45deg);
        top: 10px;
      }
    }
  }
}
nav {
  position: absolute;
  height: 100%;
  top: 0;
  left: 0;
  background: var(--green);
  color: var(--blue);
  width: 300px;
  z-index: 1;
  padding-top: 80px;
  transform: translateX(-100%);
  transition: 0.24s cubic-bezier(.52,.01,.8,1);
  & li {
    transform: translateX(-5px);
    transition: 0.16s cubic-bezier(0.44, 0.09, 0.46, 0.84);
    opacity: 0;
  }
  & a {
    display: block;
    font-size: 1.75em;
    font-weight: bold;
    text-decoration: none;
    color: inherit;
    transition: 0.24s ease-in-out;
    &:hover {
      text-decoration: none;
      color: var(--white);
    }
  }
  &[data-state="open"] {
    transform: translateX(0%);
    & ul {
      @for $i from 1 through 4 {
        li:nth-child(#{$i}) {
          transition-delay: 0.16s * $i;
          transform: translateX(0px);
          opacity: 1;
        }
      }
    }
  }
}
.btn {
  z-index: 1;
  overflow: hidden;
  background: transparent;
  position: relative;
  padding: 8px 50px;
  border-radius: 30px;
  cursor: pointer;
  font-size: 1em;
  letter-spacing: 2px;
  transition: 0.2s ease;
  font-weight: bold;
  margin: 5px 0px;
  &.green {
    border: 4px solid var(--green);
    color: var(--blue);
    &:before {
      content: "";
      position: absolute;
      left: 0;
      top: 0;
      width: 0%;
      height: 100%;
      background: var(--green);
      z-index: -1;
      transition: 0.2s ease;
    }
    &:hover {
      color: var(--white);
      background: var(--green);
      transition: 0.2s ease;
      &:before {
        width: 100%;
      }
    }
  }
}
@media screen and (max-width:768px) {
  body {
    display:block;
  }
  .container {
    margin-top:70px;
    margin-bottom:70px;
  }
} 
              
            
!

JS

              
                gsap.set("svg", { visibility: "visible" });
gsap.to("#headStripe", {
  y: 0.5,
  rotation: 1,
  yoyo: true,
  repeat: -1,
  ease: "sine.inOut",
  duration: 1
});
gsap.to("#spaceman", {
  y: 0.5,
  rotation: 1,
  yoyo: true,
  repeat: -1,
  ease: "sine.inOut",
  duration: 1
});
gsap.to("#craterSmall", {
  x: -3,
  yoyo: true,
  repeat: -1,
  duration: 1,
  ease: "sine.inOut"
});
gsap.to("#craterBig", {
  x: 3,
  yoyo: true,
  repeat: -1,
  duration: 1,
  ease: "sine.inOut"
});
gsap.to("#planet", {
  rotation: -2,
  yoyo: true,
  repeat: -1,
  duration: 1,
  ease: "sine.inOut",
  transformOrigin: "50% 50%"
});

gsap.to("#starsBig g", {
  rotation: "random(-30,30)",
  transformOrigin: "50% 50%",
  yoyo: true,
  repeat: -1,
  ease: "sine.inOut"
});
gsap.fromTo(
  "#starsSmall g",
  { scale: 0, transformOrigin: "50% 50%" },
  { scale: 1, transformOrigin: "50% 50%", yoyo: true, repeat: -1, stagger: 0.1 }
);
gsap.to("#circlesSmall circle", {
  y: -4,
  yoyo: true,
  duration: 1,
  ease: "sine.inOut",
  repeat: -1
});
gsap.to("#circlesBig circle", {
  y: -2,
  yoyo: true,
  duration: 1,
  ease: "sine.inOut",
  repeat: -1
});

gsap.set("#glassShine", { x: -68 });

gsap.to("#glassShine", {
  x: 80,
  duration: 2,
  rotation: -30,
  ease: "expo.inOut",
  transformOrigin: "50% 50%",
  repeat: -1,
  repeatDelay: 8,
  delay: 2
});

const burger = document.querySelector('.burger');
const nav = document.querySelector('nav');

burger.addEventListener('click',(e) => {
  burger.dataset.state === 'closed' ? burger.dataset.state = "open" : burger.dataset.state = "closed"
  nav.dataset.state === "closed" ? nav.dataset.state = "open" : nav.dataset.state = "closed"
})
              
            
!
999px

Console