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HTML

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Adding Classes

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About the <head>

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Insecure Resource

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CSS

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CSS Base

About CSS Base

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JavaScript

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Babel includes JSX processing.

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HTML 

              
                <div class="container">
    <svg class="animation" xmlns="http://www.w3.org/2000/svg"  viewBox="0 0 716 1008">
        <defs>
            <mask id="main-mask" maskUnits="userSpaceOnUse">
                <rect width="716" height="716" y="292" fill="#fff"/>
            </mask>
            <mask id="heart-mask" maskUnits="userSpaceOnUse">
                <path class="heart" fill="#fff" d="M358,412c122-309,712,10.25.5,588C-354,422,236,103,358,412Z"/>
            </mask>
        </defs>
        <rect class="bg" width="716" height="1008" fill="#000113"/>
        <g class="lines-wrap" mask="url(#main-mask)">
            <g class="bg-lines" fill="#00c5f8">
                <rect width="716" height="10" y="252"/>
                <rect width="716" height="10" y="292"/>
                <rect width="716" height="10" y="332"/>
                <rect width="716" height="10" y="372"/>
                <rect width="716" height="10" y="412"/>
                <rect width="716" height="10" y="452"/>
                <rect width="716" height="10" y="492"/>
                <rect width="716" height="10" y="532"/>
                <rect width="716" height="10" y="572"/>
                <rect width="716" height="10" y="612"/>
                <rect width="716" height="10" y="652"/>
                <rect width="716" height="10" y="692"/>
                <rect width="716" height="10" y="732"/>
                <rect width="716" height="10" y="772"/>
                <rect width="716" height="10" y="812"/>
                <rect width="716" height="10" y="852"/>
                <rect width="716" height="10" y="892"/>
                <rect width="716" height="10" y="932"/>
                <rect width="716" height="10" y="972"/>
            </g>
        </g>
        <g mask="url(#main-mask)">
            <path class="heart-base heart" d="M358,412c122-309,712,10.25.5,588C-354,422,236,103,358,412Z"/>
            <g class="heart-wrap" mask="url(#heart-mask)">
                <g class="heart-lines" fill="#00c5f8">
                    <rect width="716" height="10" y="302"/>
                    <rect width="716" height="10" y="262"/>
                    <rect width="716" height="10" y="222"/>
                    <rect width="716" height="10" y="182"/>
                    <rect width="716" height="10" y="342"/>
                    <rect width="716" height="10" y="382"/>
                    <rect width="716" height="10" y="422"/>
                    <rect width="716" height="10" y="462"/>
                    <rect width="716" height="10" y="502"/>
                    <rect width="716" height="10" y="542"/>
                    <rect width="716" height="10" y="582"/>
                    <rect width="716" height="10" y="622"/>
                    <rect width="716" height="10" y="662"/>
                    <rect width="716" height="10" y="702"/>
                    <rect width="716" height="10" y="742"/>
                    <rect width="716" height="10" y="782"/>
                    <rect width="716" height="10" y="822"/>
                    <rect width="716" height="10" y="862"/>
                    <rect width="716" height="10" y="902"/>
                    <rect width="716" height="10" y="942"/>
                    <rect width="716" height="10" y="982"/>
                    <rect width="716" height="10" y="1022"/>
                </g>
            </g>
            
        </g>
    </svg>
    <div class="content">
        <h1 class="band">the modern lovers</h1>
        <p class="location"><span>at the stone phoenix coffeehouse</span><span>1120 boylston street / boston, massachusetts</span></p>
        <p class="date"><span>friday and saturday</span><span>january 12 & 13 1973 / 9 pm</span></p>
    </div>
<!--     <img src="https://s3-us-west-2.amazonaws.com/s.cdpn.io/61488/the-modern-lovers.png" alt="" class="trace"> -->
</div>
!

CSS 

              
                html {
	box-sizing: border-box;
}

*, *:before, *:after {
	box-sizing: inherit;
}

html, body {
	width: 100%;
	height: 100%;
}

body {
    display: flex;
    align-items: center;
    justify-content: center;
    background-color: #001823;
    color: #DDE1E0;
	font-family: neue-haas-grotesk-display, "Helvetica Neue", Helvetica, sans-serif;
	font-weight: 600;
	font-style: normal;
    font-size: 15px;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
    font-display: block;
}

.container {
	position: relative;
	width: 716px;
    height: 1008px;
	visibility: hidden;
    cursor: pointer;
}

.animation {
    position: absolute;
    z-index: 0;
    top: 0;
    left: 0;
    width: 716px;
    height: 1008px;
}

.content {
    position: relative;
    z-index: 2;
    width: 716px;
    height: 100%;
    overflow: hidden;
    
    p {
        position: absolute;
        top: 23px;
        margin: 0;
        letter-spacing: 0.35px;
        line-height: 1.2;
        perspective: 200px;
    }
    
    span {
        display: block;
        transform-style: preserve-3d;
        backface-visibility: hidden;
    }
}

.band {
    position: absolute;
    left: 22px;
    top: 209px;
    margin: 0;
    font-family: neue-haas-grotesk-display, "Helvetica Neue", Helvetica, sans-serif;
    font-size: 52px;
    font-weight: 600;
    color: #DDE2D6;
    letter-spacing: 0px;
    line-height: 1.3;
    perspective: 200px;
}

.location {
    left: 26px;
}

.date {
    left: 508px;
}

.char {
    transform-style: preserve-3d;
    backface-visibility: hidden;
}

.trace {
    position: absolute;
    z-index: 1;
    top: 0;
    left: 0;
    display: none;
}
!

JS 

              
                console.clear();

select = e => document.querySelector(e);
selectAll = e => document.querySelectorAll(e);

const container = select('.container');
let master = gsap.timeline({ delay: 0.5 });
const bandText = new SplitText('.band', {type:"chars", charsClass:"char", position: "relative" });

function animateHeart() {
    tl = gsap.timeline();
    tl.to('.heart-lines', {
        y: -40,
        duration: 4,
        ease: "none",
        repeat: -1
    }, 0)
    .from('.bg-lines rect', {
        scale: 0,
        duration: 4,
        ease: "expo",
        stagger: {
            each: 0.05,
            from: "center",
            axis: "x",
            ease: "sine.in"
        },
        transformOrigin: "center center"
    }, 0)
    .to('.bg-lines', {
        y: 40,
        duration: 4,
        ease: "none",
        repeat: -1
    }, 0)
    .from('.heart', {
        y: -716,
        duration: 16,
        ease: 'expo', 
        delay: 0.2
    }, 0.5)
    .from('.char', {
        rotationX: 180,
        x: 500,
        opacity: 0,
        duration: 7,
        ease: 'expo',
        stagger: 0.01,
        transformOrigin: "center center -50px"
    }, 0.7)
    .from('.location span', {
        rotationX: 45,
        opacity: 0,
        duration: 7,
        ease: 'expo',
        stagger: -0.5,
        transformOrigin: "center center -50px"
    }, 1.2)
    .from('.date span', {
        rotationX: 45,
        opacity: 0,
        duration: 7,
        ease: 'expo',
        stagger: -0.5,
        transformOrigin: "center center -50px"
    }, 1.2)
    return tl;
}

function resize() {
	let vh = window.innerHeight;
	// let sh = container.offsetHeight;
    let sh = 1008;
	let scaleFactor = vh/sh;
	if(scaleFactor<1) {
		gsap.set(container, { scale: scaleFactor });
	}
    else {
        gsap.set(container, { scale: 1 });
    }
}

function init() {
    resize();
    gsap.set(container, { autoAlpha: 1 });
    master.add(animateHeart());
    container.onclick = () => {
        master.restart();
    }
    
}

window.onresize = resize;

window.onload = () => {
	init();
};
!
999px

Console