CodePen Embed - Liquid UI Elements

<div class="grid">

    <label class="radio">
        <input type="radio" name="r" value="1" checked />
        <svg viewBox="0 0 24 24" filter="url(#goo-light)">
            <circle class="top" cx="12" cy="-12" r="8" />
            <circle class="dot" cx="12" cy="12" r="5" />
            <circle class="drop" cx="12" cy="12" r="2" />
        </svg>
    </label>

    <label class="radio">
        <input type="radio" name="r" value="2" />
        <svg viewBox="0 0 24 24" filter="url(#goo-light)">
            <circle class="top" cx="12" cy="-12" r="8" />
            <circle class="dot" cx="12" cy="12" r="5" />
            <circle class="drop" cx="12" cy="12" r="2" />
        </svg>
    </label>

    <label class="switch">
        <input type="checkbox" checked />
        <svg viewBox="0 0 38 24" filter="url(#goo)">
            <circle class="default" cx="12" cy="12" r="8" />
            <circle class="dot" cx="26" cy="12" r="8" />
            <circle class="drop" cx="25" cy="-1" r="2" />
        </svg>
    </label>

    <label class="switch">
        <input type="checkbox" />
        <svg viewBox="0 0 38 24" filter="url(#goo)">
            <circle class="default" cx="12" cy="12" r="8" />
            <circle class="dot" cx="26" cy="12" r="8" />
        </svg>
    </label>

    <label class="checkbox">
        <input type="checkbox" checked />
        <svg viewBox="0 0 24 24" filter="url(#goo-light)">
            <path class="tick" d="M4.5 10L10.5 16L24.5 1" />
            <circle class="dot" cx="10.5" cy="15.5" r="1.5" />
        </svg>
    </label>

    <label class="checkbox">
        <input type="checkbox" />
        <svg viewBox="0 0 24 24" filter="url(#goo-light)">
            <path class="tick" d="M4.5 10L10.5 16L24.5 1" />
            <circle class="dot" cx="10.5" cy="15.5" r="1.5" />
            <circle class="drop" cx="25" cy="-1" r="2" />
        </svg>
    </label>

    <div class="last">

        <button class="btn">
            <span>Submit</span>
            <svg preserveAspectRatio="none" viewBox="0 0 132 45">
                <g clip-path="url(#clip)" filter="url(#goo-big)">
                    <circle class="top-left" cx="49.5" cy="-0.5" r="26.5" />
                    <circle class="middle-bottom" cx="70.5" cy="40.5" r="26.5" />
                    <circle class="top-right" cx="104" cy="6.5" r="27" />
                    <circle class="right-bottom" cx="123.5" cy="36.5" r="26.5" />
                    <circle class="left-bottom" cx="16.5" cy="28" r="30" />
                </g>
                <defs>
                    <clipPath id="clip">
                        <rect width="132" height="45" rx="7" />
                    </clipPath>
                </defs>
            </svg>
        </button>

    </div>

</div>

<svg width="0" height="0">
    <defs>
        <filter id="goo" x="-50%" width="200%" y="-50%" height="200%" color-interpolation-filters="sRGB">
            <feGaussianBlur in="SourceGraphic" stdDeviation="3" result="blur" />
            <feColorMatrix in="blur" mode="matrix" values="1 0 0 0 0  0 1 0 0 0  0 0 1 0 0  0 0 0 21 -7" result="cm" />
        </filter>
        <filter id="goo-light" x="-50%" width="200%" y="-50%" height="200%" color-interpolation-filters="sRGB">
            <feGaussianBlur in="SourceGraphic" stdDeviation="1.25" result="blur" />
            <feColorMatrix in="blur" mode="matrix" values="1 0 0 0 0  0 1 0 0 0  0 0 1 0 0  0 0 0 21 -7" result="cm" />
        </filter>
        <filter id="goo-big" x="-50%" width="200%" y="-50%" height="200%" color-interpolation-filters="sRGB">
            <feGaussianBlur in="SourceGraphic" stdDeviation="7" result="blur" />
            <feColorMatrix in="blur" mode="matrix" values="1 0 0 0 0  0 1 0 0 0  0 0 1 0 0  0 0 0 21 -7" result="cm" />
        </filter>
    </defs>
</svg>

<!-- dribbble - twitter -->
<a class="dribbble" href="https://dribbble.com/ai" target="_blank"><img src="https://cdn.dribbble.com/assets/dribbble-ball-mark-2bd45f09c2fb58dbbfb44766d5d1d07c5a12972d602ef8b32204d28fa3dda554.svg" alt=""></a>
<a class="twitter" target="_top" href="https://twitter.com/aaroniker_me"><svg xmlns="http://www.w3.org/2000/svg" width="72" height="72" viewBox="0 0 72 72"><path d="M67.812 16.141a26.246 26.246 0 0 1-7.519 2.06 13.134 13.134 0 0 0 5.756-7.244 26.127 26.127 0 0 1-8.313 3.176A13.075 13.075 0 0 0 48.182 10c-7.229 0-13.092 5.861-13.092 13.093 0 1.026.118 2.021.338 2.981-10.885-.548-20.528-5.757-26.987-13.679a13.048 13.048 0 0 0-1.771 6.581c0 4.542 2.312 8.551 5.824 10.898a13.048 13.048 0 0 1-5.93-1.638c-.002.055-.002.11-.002.162 0 6.345 4.513 11.638 10.504 12.84a13.177 13.177 0 0 1-3.449.457c-.846 0-1.667-.078-2.465-.231 1.667 5.2 6.499 8.986 12.23 9.09a26.276 26.276 0 0 1-16.26 5.606A26.21 26.21 0 0 1 4 55.976a37.036 37.036 0 0 0 20.067 5.882c24.083 0 37.251-19.949 37.251-37.249 0-.566-.014-1.134-.039-1.694a26.597 26.597 0 0 0 6.533-6.774z"></path></svg></a>

:root {
    --c-active: #275EFE;
    --c-active-inner: #FFFFFF;
    --c-default: #D2D6E9;
    --c-default-dark: #C7CBDF;
    --c-black: #1B1B22;
}

.radio,
.checkbox,
.switch {
    display: table;
    border-radius: var(--border-radius, 12px) var(--border-radius-corner, 12px) var(--border-radius, 12px) var(--border-radius, 12px);
    position: relative;
    input {
        appearance: none;
        outline: none;
        border: none;
        background: var(--input-background, none);
        display: block;
        cursor: pointer;
        margin: 0;
        padding: 0;
        border-radius: inherit;
        width: var(--input-width, 24px);
        height: var(--input-height, 24px);
    }
    svg {
        display: block;
        position: absolute;
        left: 0;
        right: 0;
        bottom: 0;
        top: 0;
        pointer-events: none;
        fill: var(--c-active-inner);
        transform: scale(1.01) translateZ(0);
    }
}

.radio,
.checkbox {
    input {
        --border-color: var(--c-default);
        --border-width: 2px;
        box-shadow: inset 0 0 0 var(--border-width) var(--border-color);
        &:checked {
            --border-color: var(--c-active);
        }
        &:not(:checked) {
            transition: box-shadow .25s;
            &:hover {
                --border-width: 3px;
                --border-color: var(--c-active);
            }
        }
    }
}

.radio {
    input {
        &:checked {
            --border-width: 6.75px;
        }
        & + svg {
            --top-y: 0;
            --dot-y: -17px;
            --drop-y: -14px;
            --top-s-x: 1.75;
            --top-s-y: 1;
            .top {
                transform-origin: 12px -12px;
                transform: translateY(var(--top-y)) scale(var(--top-s-x), var(--top-s-y)) translateZ(0);
            }
            .dot {
                transform: translateY(var(--dot-y)) translateZ(0);
            }
            .drop {
                transform: translateY(var(--drop-y)) translateZ(0);
            }
        }
    }
}

.checkbox {
    --border-radius: 5px;
    --border-radius-corner: 5px;
    input {
        &:checked {
            --border-width: 12px;
            & + svg {
                --tick-offset: 46.5px;
            }
        }
        & + svg {
            --dot-x: 14px;
            --dot-y: -14px;
            --dot-s: 1;
            --tick-offset: 20.5px;
            --tick-array: 16px;
            --tick-s: 1;
            --drop-s: 1;
            .tick {
                fill: none;
                stroke-width: 3px;
                stroke-linecap: round;
                stroke-linejoin: round;
                stroke: var(--c-active-inner);
                stroke-dasharray: var(--tick-array) 33px;
                stroke-dashoffset: var(--tick-offset);
                transform-origin: 10.5px 16px;
                transform: scale(var(--tick-s)) translateZ(0);
            }
            .dot {
                transform-origin: 10.5px 15.5px;
                transform: translate(var(--dot-x), var(--dot-y)) scale(var(--dot-s)) translateZ(0);
            }
            .drop {
                transform-origin: 25px -1px;
                transform: scale(var(--drop-s)) translateZ(0);
            }
        }
    }
}

.switch {
    --input-width: 38px;
    input {
        --input-background: var(--c-default);
        &:checked {
            --input-background: var(--c-active);
            & + svg {
                --default-s: 0;
                --default-x: 8px;
                --dot-s: 1;
                --dot-x: 0px;
            }
        }
        & + svg {
            --input-background: var(--c-default);
            --default-s: 1;
            --default-x: 0px;
            --dot-s: 0;
            --dot-x: -8px;
        }
    }
    .default {
        transform-origin: 12px 12px;
        transform: translateX(var(--default-x)) scale(var(--default-s)) translateZ(0);
    }
    .dot {
        transform-origin: 26px 12px;
        transform: translateX(var(--dot-x)) scale(var(--dot-s)) translateZ(0);
    }
}

.btn {
    appearance: none;
    border: none;
    position: relative;
    background: var(--c-black);
    color: #fff;
    outline: none;
    cursor: pointer;
    font-size: 14px;
    line-height: 21px;
    font-weight: 600;
    display: block;
    width: 132px;
    text-align: center;
    border-radius: 7px;
    margin: 0 auto;
    padding: 12px 0;
    span {
        position: relative;
        z-index: 1;
    }
    svg {
        display: block;
        width: 100%;
        height: 100%;
        position: absolute;
        left: 0;
        top: 0;
        fill: var(--c-active);
        circle {
            transition: transform var(--duration, .25s) ease-out;
            &.top-left {
                transform: translate(var(--spacing, -16px), var(--spacing, -40px));
            }
            &.middle-bottom {
                transform: translate(var(--spacing, 8px), var(--spacing, 40px));
            }
            &.top-right {
                transform: translate(var(--spacing, 40px), var(--spacing, -40px));
            }
            &.right-bottom {
                transform: translate(var(--spacing, 4px), var(--spacing, 40px));
            }
            &.left-bottom {
                transform: translate(var(--spacing, -40px), var(--spacing, 40px));
            }
        }
    }
    &:hover {
        --spacing: 0;
        --duration: .45s;
    }
}

.grid {
    display: grid;
    grid-gap: 24px 32px;
    grid-template-columns: repeat(3, auto);
    grid-template-rows: repeat(3, auto);
    grid-auto-flow: column;
    .last {
        grid-column: 1 / 4;
        grid-row: 3;
    }
}

html {
    box-sizing: border-box;
    -webkit-font-smoothing: antialiased;
}

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

// Center & dribbble
body {
    min-height: 100vh;
    display: flex;
    font-family: 'Poppins', Arial;
    justify-content: center;
    align-items: center;
    background: #fff;
    .dribbble {
        position: fixed;
        display: block;
        right: 20px;
        bottom: 20px;
        img {
            display: block;
            height: 28px;
        }
    }
    .twitter {
        position: fixed;
        display: block;
        right: 64px;
        bottom: 14px;
        svg {
            width: 32px;
            height: 32px;
            fill: #1da1f2;
        }
    }
}

View Compiled

const { to, set, from, fromTo } = gsap

const getVar = (key, elem = document.documentElement) => getComputedStyle(elem).getPropertyValue(key)

document.querySelectorAll('.radio').forEach(elem => {
    let svg = elem.querySelector('svg'),
        input = elem.querySelector('input')
    input.addEventListener('change', e => {
        fromTo(input, {
            '--border-width': '3px'
        }, {
            '--border-color': getVar('--c-active'),
            '--border-width': '12px',
            duration: .2
        })
        to(svg, {
            keyframes: [{
                '--top-y': '6px',
                '--top-s-x': 1,
                '--top-s-y': 1.25,
                duration: .2,
                delay: .2
            }, {
                '--top-y': '0px',
                '--top-s-x': 1.75,
                '--top-s-y': 1,
                duration: .6
            }]
        })
        to(svg, {
            keyframes: [{
                '--dot-y': '2px',
                duration: .3,
                delay: .2
            }, {
                '--dot-y': '0px',
                duration: .3
            }]
        })
        to(svg, {
            '--drop-y': '0px',
            duration: .6,
            delay: .4,
            clearProps: true,
            onComplete() {
                input.removeAttribute('style')
            }
        })
    })
})

document.querySelectorAll('.checkbox').forEach(elem => {
    let svg = elem.querySelector('svg'),
        input = elem.querySelector('input')
    input.addEventListener('change', e => {
        let checked = input.checked
        if(!checked) {
            return
        }
        fromTo(input, {
            '--border-width': '3px'
        }, {
            '--border-color': getVar('--c-active'),
            '--border-width': '12px',
            duration: .2,
            clearProps: true
        })
        set(svg, {
            '--dot-x': '14px',
            '--dot-y': '-14px',
            '--tick-offset': '20.5px',
            '--tick-array': '16.5px',
            '--drop-s': 1
        })
        to(elem, {
            keyframes: [{
                '--border-radius-corner': '14px',
                duration: .2,
                delay: .2
            }, {
                '--border-radius-corner': '5px',
                duration: .3,
                clearProps: true
            }]
        })
        to(svg, {
            '--dot-x': '0px',
            '--dot-y': '0px',
            '--dot-s': 1,
            duration: .4,
            delay: .4
        })
        to(svg, {
            keyframes: [{
                '--tick-offset': '48px',
                '--tick-array': '14px',
                duration: .3,
                delay: .2
            }, {
                '--tick-offset': '46.5px',
                '--tick-array': '16.5px',
                duration: .35,
                clearProps: true
            }]
        })
    })
})

document.querySelectorAll('.switch').forEach(elem => {
    let svg = elem.querySelector('svg'),
        input = elem.querySelector('input')
    input.addEventListener('pointerenter', e => {
        if(elem.animated || input.checked) {
            return
        }
        to(input, {
            '--input-background': getVar('--c-default-dark'),
            duration: .2
        })
    })
    input.addEventListener('pointerleave', e => {
        if(elem.animated || input.checked) {
            return
        }
        to(input, {
            '--input-background': getVar('--c-default'),
            duration: .2
        })
    })
    input.addEventListener('change', e => {
        let checked = input.checked
        let hide = checked ? 'default' : 'dot',
            show = checked ? 'dot' : 'default'
        fromTo(svg, {
            '--default-s': checked ? 1 : 0,
            '--default-x': checked ? '0px' : '8px',
            '--dot-s': checked ? 0 : 1,
            '--dot-x': checked ? '-8px' : '0px'
        }, {
            ['--' + hide + '-s']: 0,
            ['--' + hide + '-x']: checked ? '8px' : '-8px',
            duration: .25,
            delay: .15
        })
        fromTo(input, {
            '--input-background': getVar(checked ? '--c-default' : '--c-active'),
        }, {
            '--input-background': getVar(checked ? '--c-active' : '--c-default'),
            duration: .35,
            clearProps: true
        })
        to(svg, {
            keyframes: [{
                ['--' + show + '-x']: checked ? '2px' : '-2px',
                ['--' + show + '-s']: 1,
                duration: .25
            }, {
                ['--' + show + '-x']: '0px',
                duration: .2,
                clearProps: true
            }]
        })
    })
})

This Pen is owned by Aaron Iker on CodePen.

See more by @aaroniker on CodePen

External CSS

https://fonts.googleapis.com/css2?family=Poppins:wght@400;500;700&display=swap

External JavaScript

https://unpkg.co/gsap@3/dist/gsap.min.js