Hero SVG Animation
Tags: css, html, animation, webdev
Published: 2022-03-20 06:57:50

HTML

```html
<head>
  <link href="https://fonts.googleapis.com/css?family=Montserrat:400,400i,700" rel="stylesheet">
</head> 

<div id="load" class="loader active">
     <span class="load">loading</span>
 </div>
<section id="hero" class="hero-section">
    <div id="animated-bg"></div>
    <div id="left-indicator"></div>
    <div id="right-indicator"></div>
    <div class="container hero-section__container">
        <div id="left-block" class="left-block active">
            <div class="text-wrap text-wrap-left">
                <h2 class="lbl-1">Customer alignment for today
                    <span class="yellow">.</span>
                </h2>
            </div>
            <div id="circles"></div>
            <div class="circles-description">
                <p class="lbl-2 desc-left">Your Brand’s Why.</p>
                <p class="lbl-2 desc-right">Your Customer’s Why.</p>
            </div>
            <div class="button-wrap button-wrap-left">
                <div class="button-gradient yellow">
                    <a href="#" class="hero-button">Learn More</a>
                </div>
            </div>
        </div>
        <div id="right-block" class="right-block">
            <div class="logo-wrap logo-wrap-right">
                <svg class="labs-circles" id="labs-circles" width="13px" height="11px" viewBox="0 0 13 11" version="1.1" xmlns="http://www.w3.org/2000/svg"
                    xmlns:xlink="http://www.w3.org/1999/xlink">
                    <style>
                        #left-circle {
                            animation: left-circle 1.5s cubic-bezier(0.57, 0, 0.3, 1) infinite;
                            transform-origin: 20% 50%;
                        }

                        #right-circle {
                            animation: right-circle 1.5s cubic-bezier(0.57, 0, 0.3, 1) 0.05s infinite;
                            transform-origin: 33% 56%;
                        }

                        @keyframes left-circle {
                            0% {
                                transform: rotate(0)
                            }
                            50% {
                                transform: rotate(-180deg)
                            }
                            100% {
                                transform: rotate(0)
                            }
                        }

                        @keyframes right-circle {
                            0% {
                                transform: rotate(0)
                            }
                            50% {
                                transform: rotate(-155deg)
                            }
                            100% {
                                transform: rotate(0)
                            }
                        }
                    </style>
                    <g id="Page-1" stroke="none" stroke-width="1" fill="none" fill-rule="evenodd">
                        <g id="Index_Loop" transform="translate(-1051.000000, -164.000000)">
                            <g id="Top" transform="translate(-1.000000, -7.000000)">
                                <g id="Page-1" transform="translate(1006.000000, 171.000000)">
                                    <g id="Group-2" transform="translate(46.000000, 0.000000)">
                                        <circle id="Oval" fill="#F9B225" cx="3.5" cy="7.5" r="3.5"></circle>
                                        <circle id="left-circle" fill="#F35C55" cx="8" cy="2" r="2"></circle>
                                        <circle id="right-circle" fill="#ED0188" cx="11" cy="7" r="2"></circle>
                                    </g>
                                </g>
                            </g>
                        </g>
                    </g>
                </svg>
                <object class="labs-logo" data="https://s3-us-west-1.amazonaws.com/zajno-storage0/rocket-source/labs.svg" type="image/svg+xml"></object>
            </div>
            <div class="text-wrap text-wrap-right">
                <h2 class="lbl-1">Innovation for Tomorrow
                    <span class="red">.</span>
                </h2>
            </div>
            <div id="infinity" class="infinity">
                <div id="trident" class="trident-mask"></div>
                <svg id="mask" width="431" height="195" xmlns="http://www.w3.org/2000/svg">
                    <defs>
                        <clipPath id="myClip">
                            <rect style="transform: rotate(-45deg); transform-origin: center;" x="207.5" y="83" width="19" height="27" />
                        </clipPath>
                        <clipPath id="y-shape" clipPathUnits="objectBoundingBox">
                            <polygon points=".482558 .3836, .537282 .51000, .502641 .567359, .45700, .46350" />
                        </clipPath>
                        <linearGradient id="SVG" gradientUnits="userSpaceOnUse" x1="2.2678" y1="103.6775" x2="330.9431" y2="94.3244" gradientTransform="matrix(1 0 0 -1 0 192.6)">
                            <stop offset="0" style="stop-color:#F9B224" />
                            <stop offset="0.1468" style="stop-color:#F9B224" />
                            <stop offset="0.6142" style="stop-color:#F35A56" />
                            <stop offset="1" style="stop-color:#ED0288" />
                        </linearGradient>
                    </defs>
                    <rect id="mask-rect" fill="url(#SVG)" x="0" y="0" width="431" height="195" clip-path="url(#myClip)" />
                </svg>
                <div id="loop"></div>
                <object class="infinity-sign" data="https://s3-us-west-1.amazonaws.com/zajno-storage0/rocket-source/infinity.svg" type="image/svg+xml"></object>
            </div>
            <div class="button-wrap button-wrap-right">
                <div class="button-gradient red">
                    <a href="#" class="hero-button">Learn More</a>
                </div>
            </div>
        </div>
</section>
```


## Sass 
```sass


*
    box-sizing: border-box

html, body
    width: 100%

body,
main
    margin: 0
    overflow-x: hidden

a
    text-decoration: none
    outline: none

section
    position: relative
    background-repeat: no-repeat
    background-position: center
    background-size: cover
  
.hero-section
    opacity: 0
    z-index: 40
    transition: all 0.6s ease
    &.active
        opacity: 1

.lbl-1 
    color: #f0f0f0
    font-family: "Montserrat"
    font-size: 25px
    font-weight: 500
    line-height: 39px
    color: #fff
    margin: 0
    span
        &.red
            color: #ed0188
        &.yellow
            color: #F9B225

.lbl-2 
    text-shadow: 1px 2px 1px rgba(0, 0, 0, 0.26)
    color: #ffffff
    font-family: "Montserrat"
    font-size: 18px
    font-weight: 600
    line-height: 24px
    margin: 0

.hero-section__container
    width: 1120px
    height: 100%
    margin: 0 auto
    display: flex
    justify-content: space-between
    align-items: flex-start

.hero-section
    width: 100%
    height: 100vh
    overflow: hidden
    &.laptop-ie
        height: 700px
    
.loader
    width: 100%
    height: 100%
    z-index: 10
    position: absolute
    display: flex
    justify-content: center
    align-items: center
    background-color: #242424
    .load
        color: #ffffff
        font-family: "Montserrat"
        font-size: 15px
        font-weight: 500
        line-height: 39px
        margin: 0
        text-transform: uppercase
        letter-spacing: 10px
        opacity: 0
        animation: bounce 2s ease infinite
        visibility: visible
        transition: visibility 0.3s ease
    &.active 
        .load
            .load
                visibility: hidden

#left-indicator
    width: 50%
    height: 100%
    position: absolute
    left: 0
    top: 0
    z-index: 6

#right-indicator
    width: 50%
    height: 100%
    position: absolute
    right: 0
    top: 0
    z-index: 6

.text-wrap
    position: relative
    text-align: center
    opacity: 0
    &-left
        transform: translateX(76px)
        margin: 0 0 20px 0
        transition: all 0.5s cubic-bezier(0.60, 0.00, 0.20, 1.00) 0.1s
    &-right
        transform: translateX(-76px)
        transition: all 0.5s cubic-bezier(0.60, 0.00, 0.20, 1.00) 0.1s
        margin: 5px 0 36px 0

#circles 
    position: relative
    z-index: 1
    width: 440px
    height: 253px
    svg 
        height: auto !important
        width: initial !important
        position: absolute
        z-index: 1
        left: -18.5%
        top: 0

#labs-circles 
    overflow: visible

.infinity
    position: relative
    display: flex
    justify-content: center
    align-items: center
    transition: all 0.9s ease
    .infinity-sign
        position: absolute
        margin-top: -3px
        filter: grayscale(1)
        transition: filter 0.9s ease

.button-wrap
    text-align: center
    position: relative
    display: flex
    justify-content: center
    &-left
        margin-top: 52px
    &-right 
        margin-top: 97px

.button-gradient
    width: 137px
    height: 44px
    border-radius: 57px
    padding: 1px
    opacity: 0
    z-index: 7
    &.red
        transition: all 0.4s cubic-bezier(0.60, 0.00, 0.20, 1.00) 0.2s
        transform: translateX(-76px)
        background-image: linear-gradient(233deg, #ed0088 0%, #f9b225 100%)
    &.yellow
        transition: all 0.4s cubic-bezier(0.60, 0.00, 0.20, 1.00) 0.2s
        transform: translateX(76px)
        background-image: linear-gradient(-138deg, #F9EB25 0%, #F9B225 100%)
    .hero-button
        position: relative
        color: #ffffff
        width: 137px
        height: 44px
        font-family: "Montserrat"
        font-size: 15px
        font-weight: 400
        display: flex
        justify-content: center
        align-items: center
        background-color: #242424
        width: 100%
        height: 100%
        border-radius: 57px
        transition: all 0.4s linear

.right-block
    text-align: center
    padding-top: 165px
    .logo-wrap
        display: flex
        flex-direction: column
        align-items: center
        transition: all 0.5s cubic-bezier(0.60, 0.00, 0.20, 1.00) 0.1s
        opacity: 0
        transform: translateX(-76px)
        .labs-logo
            position: relative   
        .labs-circles
            position: relative
            margin-bottom: 5px
            svg 
                overflow: visible
          
@keyframes bounce
    0% 
        opacity: 1
        letter-spacing: 10px
    50% 
        opacity: 0.8
        letter-spacing: 7px
    100%
        opacity: 1
        letter-spacing: 10px

.right-block
    &.active
        .logo-wrap
            opacity: 1
            transform: translateX(0)
        .infinity
            .infinity-sign
                filter: grayscale(0)
        #loop 
            &:before 
                background: #f3655b
            svg 
                path
                    stroke: #000000
        .button-gradient.red
            opacity: 1
            transform: translateX(0)
            .hero-button
                background-color: #000000
        .text-wrap
            transform: translateX(0)
            opacity: 1
        #mask 
            filter: grayscale(0)

.left-block
    position: relative
    padding-top: 218px
    .circles-description
        position: absolute
        display: flex
        justify-content: space-between
        text-align: center
        width: 100%
        left: 0
        bottom: 97px
        z-index: 4
        .desc
            &-left
                opacity: 0
                transition: all 0.3s cubic-bezier(0.80, 0.00, 0.83, 1.00) 0.3s
                transform: translateX(-30px)
                width: 100%
                max-width: 120px
                margin-left: 46px
            &-right
                opacity: 0
                transition: all 0.3s cubic-bezier(0.80, 0.00, 0.83, 1.00) 0.3s
                transform: translateX(30px)
                max-width: 170px
                margin-right: 6%

.left-block
    &.active
        .button-gradient.yellow
            opacity: 1
            transform: translateX(0)
            .hero-button
                    background-color: #000000    
        .text-wrap
            transform: translateX(0)
            opacity: 1
        .circles-description
            .desc
                &-left
                    opacity: 1
                    transform: translateX(0)
                &-right
                    opacity: 1
                    transform: translateX(0)
                
#animated-bg
    position: absolute
    z-index: 0
    left: 0
    top: 0
    width: 100%
    height: 100%
    display: flex
    justify-content: center
    svg 
        height: auto !important
        width: 101% !important
        position: absolute
        top: 0
        left: 50%
        transform: translateX(-50%) !important

#mask 
    position: absolute
    filter: grayscale(1)
    transition: filter 0.4s linear 0.1s
    z-index: 3
    margin-left: 0px

#loop 
    position: relative
    z-index: 2
    svg 
        width: auto !important
        height: auto !important
        path
            transition: stroke 0.4s linear 0.1s
            stroke: #242424
            stroke-width: 22
      
// FIREFOX
#infinity.ff 
    #mask 
        margin-left: 2px
        #mask-rect 
            clip-path: polygon(48.2558% 76px, 53.7282% 51.1256%, 50.2641% 57.1359%, 196px 46.4487%) !important
    .infinity-sign
        margin-top: -5px

#infinity.ff-old 
    .infinity-sign
        top: 0
        left: 0
        margin-top: 0px
    #mask 
        top: 0
        left: 0
        #mask-rect 
            clip-path: url(#y-shape)
// END FIREFOX
#mask 
    visibility: hidden
  
// INTERNET EXPLORER && EDGE
.trident-mask 
    position: absolute
    top: 50%
    left: 50%
    width: 15px
    transform: translate(-50%, -50%) rotate(-45deg)
    height: 40px
    z-index: 3
    margin-left: 2px
    background-image: linear-gradient(to bottom, #f46052 0%, #f24762 100%)
    display: none
    opacity: 0

#infinity 
    &.ie 
        display: block
        .infinity-sign 
            margin-top: 5px
            top: 0
            left: 0
        #mask 
            opacity: 0
        .trident-mask
            opacity: 1
            display: block
    &.edge
        display: block
        #mask 
            display: none
        #loop 
            display: none 
        .infinity-sign 
            position: relative
            top: 0
            left: 0

#right-block
    &.ie 
        .button-wrap-right
            margin-top: 133px
    &.edge 
        .button-wrap-right
            margin-top: 133px

#left-block
    &.ie 
        .circles-description 
            bottom: 67px
            position: relative
        .button-wrap-left
            margin-top: 0
    &.edge 
        .circles-description 
            bottom: 67px
            position: relative
            .button-wrap-left
                margin-top: 0
          
// END EXPLORER && EDGE
           
 
@media all and(min-width: 1800px)
    .hero-section__container
        width: 1350px

@media all and(max-width: 1700px)
    #circles 
        width: 415px
        svg 
            height: auto !important
            width: initial !important
            position: absolute
            z-index: 1
            left: -24.5%
            top: 0

@media all and(max-width: 1680px)
    #animated-bg svg
        height: auto !important
        width: 101% !important

@media all and(max-width: 1480px)
    #circles 
        width: 415px
        svg 
            height: auto !important
            width: initial !important
            position: absolute
            z-index: 1
            left: -24.5%
            top: 0
    .left-block .circles-description 
        .desc-left 
            margin-left: 32px
        .desc-right

@media all and(max-width: 1400px)
    #mask 
        margin-left: 0px
    .trident-mask 
        width: 14px

@media all and(max-width: 1330px)
    #circles 
        width: 100%
        svg 
            width: 500px !important
            left: -15.5%

@media all and(max-width: 1200px)
    .hero-section__container
        justify-content: space-around
    .left-block 
        padding-top: 168px
    .right-block
        padding-top: 115px


@media all and(max-width: 1120px)
    .hero-section__container
        width: 100%
        padding: 0 15px

@media all and(max-width: 1024px)
    #mask
        margin-left: 0px
    .right-block 
        padding-top: 85px
    .left-block 
        padding-top: 138px
    .hero-section 
        height: 1400px
    #animated-bg svg 
        width: 1900px !important
        position: absolute
        top: 0
        left: 50%
        top: 50%
        transform: translateX(-50%) translateY(-50%) rotate(90deg)
    .hero-section__container
        flex-direction: column
        align-items: center
    #left-indicator 
        width: 100%
        height: 50%
        left: 0
        top: 0
    #right-indicator
        height: 50%
        width: 100%
        left: 0
        bottom: 0
        top: inherit
    
@media all and(max-width: 768px)
    #animated-bg svg 
        width: 1500px !important

@media all and(max-width: 480px)
    #animated-bg svg 
        width: 1030px !important
    .hero-section 
        height: 1000px
    .left-block 
        padding-top: 58px
    .text-wrap-left
        margin: 0
    #circles 
        display: flex
        justify-content: center
        svg 
            width: 350px !important
            left: 0
            position: relative
    #loop svg 
        width: 300px !important
    .infinity .infinity-sign
        width: 300px
        margin-top: -2px
    .button-wrap-right 
        margin-top: 30px
    #mask defs #myClip rect 
        transform: rotate(-45deg) translateX(3px) !important
        width: 13px

@media (max-width: 320px)
    #mask 
        margin-left: -2px
```

## JavaScript

```javascript
// Detect Browsers
const isFirefox = typeof InstallTrigger !== 'undefined';
const detectFFVersion = window.navigator.userAgent.match(/Firefox\/([0-9]+)\./);
const targetVersion = detectFFVersion ? parseInt(detectFFVersion[1]) : 0;
const isIE = /*@cc_on!@*/false || !!document.documentMode;
const isEdge = !isIE && !!window.StyleMedia;

//DOM elements
const heroSection = document.getElementById("hero");
const infinityBlock = document.getElementById('infinity');
const rightBlock = document.getElementById('right-block');
const leftBlock = document.getElementById('left-block');
const leftIndicator = document.getElementById('left-indicator');
const rightIndicator = document.getElementById('right-indicator');

let rectangle = document.getElementById('mask');

if (isFirefox) {
    if (targetVersion > 57) {
        infinityBlock.classList.add('ff');
    } else {
        infinityBlock.classList.add('ff-old');
    }
}

if (isIE) {
    rectangle = document.getElementById('trident');
    infinityBlock.classList.add('ie');
    leftBlock.classList.add('ie');
    rightBlock.classList.add('ie')
    if (window.innerWidth < 1400) {
        heroSection.classList.add('laptop-ie')
    }
}

if (isEdge) {
    infinityBlock.classList.add('edge');
    leftBlock.classList.add('edge');
    rightBlock.classList.add('edge')
}

//Detect touchable device
const isTouchDevice = 'ontouchstart' in document.documentElement;

//Lottie animations variables https://github.com/airbnb/lottie-web
var circles;
var bg;
var loopAnim;

//Timers
let timerIn;
let timerOut;

//Flags
let isRight = false;
let isLeft = true;
let isCircleHalf = false;
let isBgHalf = false;
let isLoopHalf = false;


// Animation params
let circlesParams = {
    container: document.getElementById('circles'),
    renderer: 'svg',
    loop: false,
    autoplay: false,
    path: 'https://s3-us-west-1.amazonaws.com/zajno-storage0/rocket-source/circles.json'
};

let bgParams = {
    container: document.getElementById('animated-bg'),
    renderer: 'svg',
    loop: false,
    autoplay: false,
    path: 'https://s3-us-west-1.amazonaws.com/zajno-storage0/rocket-source/bg.json'
};

let loopParams = {
    container: document.getElementById('loop'),
    renderer: 'svg',
    loop: false,
    autoplay: false,
    path: 'https://s3-us-west-1.amazonaws.com/zajno-storage0/rocket-source/loop.json'
};

//Init animations
circles = lottie.loadAnimation(circlesParams);
bg = lottie.loadAnimation(bgParams);
loopAnim = lottie.loadAnimation(loopParams);

//Get animations total frames
var firstFrame = 0;
var totalFramesCircles;
var totalFramesBg;
var totalFramesLoop;

// loader element
const loader = document.getElementById('load');

// on animation frames load get total frames
circles.addEventListener('DOMLoaded', function () {
    totalFramesCircles = circles.totalFrames;
    loader.classList.remove('active')
    heroSection.classList.add('active')
})

bg.addEventListener('DOMLoaded', function () {
    totalFramesBg = bg.totalFrames;
})

loopAnim.addEventListener('DOMLoaded', function () {
    totalFramesLoop = loopAnim.totalFrames;
})

// Add eventLinsteners
if (!isTouchDevice) {
    addListener(leftIndicator, 'mouseenter', playLeftBlockAnimation)
    addListener(rightIndicator, 'mouseenter', playRightBlockAnimation)
} else {
    addListener(leftIndicator, 'touchstart', playLeftBlockAnimation)
    addListener(rightIndicator, 'touchstart', playRightBlockAnimation)
}

function addListener(element, eventName, action) {
    element.addEventListener(eventName, function () {
        action()
    });
}

//Animation play functions
function playCircleAnimation() {
    if (!isCircleHalf) {
        circles.playSegments([firstFrame, totalFramesCircles / 2], true);
        isCircleHalf = true;
    } else {
        circles.playSegments([totalFramesCircles / 2, totalFramesCircles], true);
        isCircleHalf = false;
    }
}

function playBgAnimation() {
    if (!isBgHalf) {
        bg.playSegments([firstFrame, totalFramesBg / 2], true);
        isBgHalf = true;
    } else {
        bg.playSegments([totalFramesBg / 2, totalFramesBg], true);
        isBgHalf = false;
    }
}

function playLoopAnimation() {
    if (!isBgHalf) {
        loopAnim.playSegments([firstFrame, totalFramesLoop / 2], true);
        showRectangle()
        isLoopHalf = true;
    } else {
        loopAnim.playSegments([totalFramesLoop / 2, totalFramesLoop], true);
        showRectangle()
        isLoopHalf = false;
    }
}

function showRectangle() {
    clearTimeout(timerIn)
    clearTimeout(timerOut)
    timerIn = setTimeout(function () {
        rectangle.style.zIndex = 2
        timerOut = setTimeout(function () {
            rectangle.style.zIndex = 3
        }, 500);
    }, 500)
}

function playRightBlockAnimation() {
    if (!isRight) {
        rightBlock.classList.add("active");
        leftBlock.classList.remove("active");
        isLeft = false;
        isRight = true;
        playCircleAnimation();
        playLoopAnimation();
        playBgAnimation();
    }
}

function playLeftBlockAnimation() {
    isRight = false
    leftBlock.classList.add("active")
    rightBlock.classList.remove("active")
    if (!isLeft) {
        isLeft = true
        playLoopAnimation();
        playCircleAnimation();
        playBgAnimation();
    }
}
```