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CSS

.button {
    --background: #2B3044;
    --background-hover: #1E2235;
    --text: #fff;
    --shadow: rgba(0, 9, 61, .2);
    --paper: #5C86FF;
    --paper-lines: #fff;
    --trash: #E1E6F9;
    --trash-lines: #BBC1E1;
    --check: #fff;
    --check-background: #5C86FF;
    position: relative;
    border: none;
    outline: none;
    background: none;
    padding: 10px 24px;
    border-radius: 7px;
    min-width: 142px;
    -webkit-appearance: none;
    -webkit-tap-highlight-color: transparent;
    cursor: pointer;
    display: flex;
    color: var(--text);
    background: var(--btn, var(--background));
    box-shadow: 0 var(--shadow-y, 4px) var(--shadow-blur, 8px) var(--shadow);
    transform: scale(var(--scale, 1));
    transition: transform .3s, box-shadow .3s, background .3s;
    span {
        display: block;
        font-size: 14px;
        line-height: 25px;
        font-weight: 600;
        opacity: var(--span-opacity, 1);
        transform: translateX(var(--span-x, 0)) translateZ(0);
        transition: transform .4s ease var(--span-delay, .2s), opacity .3s ease var(--span-delay, .2s);
    }
    .trash {
        display: block;
        position: relative;
        left: -8px;
        transform: translate(var(--trash-x, 0), var(--trash-y, 1px)) translateZ(0) scale(var(--trash-scale, .64));
        transition: transform .5s;
        &:before,
        &:after {
            content: '';
            position: absolute;
            height: 8px;
            width: 2px;
            border-radius: 1px;
            background: var(--icon, var(--trash));
            bottom: 100%;
            transform-origin: 50% 6px;
            transform: translate(var(--x, 3px), 2px) scaleY(var(--sy, .7)) rotate(var(--r, 0deg));
            transition: transform .4s, background .3s;
        }
        &:before {
            left: 1px;
        }
        &:after {
            right: 1px;
            --x: -3px;
        }
        .top {
            position: absolute;
            overflow: hidden;
            left: -4px;
            right: -4px;
            bottom: 100%;
            height: 40px;
            z-index: 1;
            transform: translateY(2px);
            &:before,
            &:after {
                content: '';
                position: absolute;
                border-radius: 1px;
                background: var(--icon, var(--trash));
                width: var(--w, 12px);
                height: var(--h, 2px);
                left: var(--l, 8px);
                bottom: var(--b, 5px);
                transition: background .3s, transform .4s;
            }
            &:after {
                --w: 28px;
                --h: 2px;
                --l: 0;
                --b: 0;
                transform: scaleX(var(--trash-line-scale, 1));
            }
            .paper {
                width: 14px;
                height: 18px;
                background: var(--paper);
                left: 7px;
                bottom: 0;
                border-radius: 1px;
                position: absolute;
                transform: translateY(-16px);
                opacity: 0;
                &:before,
                &:after {
                    content: '';
                    width: var(--w, 10px);
                    height: 2px;
                    border-radius: 1px;
                    position: absolute;
                    left: 2px;
                    top: var(--t, 2px);
                    background: var(--paper-lines);
                    transform: scaleY(.7);
                    box-shadow: 0 9px 0 var(--paper-lines);
                }
                &:after {
                    --t: 5px;
                    --w: 7px;
                }
            }
        }
.box {
    width: 20px;
    height: 25px;
    border: 2px solid var(--icon, var(--trash));
    border-radius: 1px 1px 4px 4px;
    position: relative;
    overflow: hidden;
    z-index: 2;
    transition: border-color .3s;
    &:before,
    &:after {
        content: '';
        position: absolute;
        width: 4px;
        height: var(--h, 20px);
        top: 0;
        left: var(--l, 50%);
        background: var(--b, var(--trash-lines));
}
            &:before {
                border-radius: 2px;
                margin-left: -2px;
                transform: translateX(-3px) scale(.6);
                box-shadow: 10px 0 0 var(--trash-lines);
                opacity: var(--trash-lines-opacity, 1);
                transition: transform .4s, opacity .4s;
            }
            &:after {
                --h: 16px;
                --b: var(--paper);
                --l: 1px;
                transform: translate(-.5px, -16px) scaleX(.5);
                box-shadow: 7px 0 0 var(--paper), 14px 0 0 var(--paper), 21px 0 0 var(--paper);
            }
        }
        .check {
            padding: 4px 3px;
            border-radius: 50%;
            background: var(--check-background);
            position: absolute;
            left: 2px;
            top: 24px;
            opacity: var(--check-opacity, 0);
            transform: translateY(var(--check-y, 0)) scale(var(--check-scale, .2));
            transition: transform var(--check-duration, .2s) ease var(--check-delay, 0s), opacity var(--check-duration-opacity, .2s) ease var(--check-delay, 0s);
            svg {
                width: 8px;
                height: 6px;
                display: block;
                fill: none;
                stroke-width: 1.5;
                stroke-dasharray: 9px;
                stroke-dashoffset: var(--check-offset, 9px);
                stroke-linecap: round;
                stroke-linejoin: round;
                stroke: var(--check);
                transition: stroke-dashoffset .4s ease var(--checkmark-delay, .4s);
            }
        }
    }
    &.delete {
        --span-opacity: 0;
        --span-x: 16px;
        --span-delay: 0s;
        --trash-x: 46px;
        --trash-y: 2px;
        --trash-scale: 1;
        --trash-lines-opacity: 0;
        --trash-line-scale: 0;
        --icon: #fff;
        --check-offset: 0;
        --check-opacity: 1;
        --check-scale: 1;
        --check-y: 16px;
        --check-delay: 1.7s;
        --checkmark-delay: 2.1s;
        --check-duration: .55s;
        --check-duration-opacity: .3s;
        .trash {
            &:before,
            &:after {
                --sy: 1;
                --x: 0;
            }
            &:before {
                --r: 40deg;
            }
            &:after {
                --r: -40deg;
            }
            .top {
                .paper {
                    animation: paper 1.5s linear forwards .5s;
                }
            }
            .box {
                &:after {
                    animation: cut 1.5s linear forwards .5s;
                }
            }
        }
    }
    &.delete,
    &:hover {
        --btn: var(--background-hover);
        --shadow-y: 5px;
        --shadow-blur: 9px;
    }
    &:active {
        --shadow-y: 2px;
        --shadow-blur: 5px;
        --scale: .94;
    }
}

@keyframes paper {
    10%,
    100% {
        opacity: 1;
    }
    20% {
        transform: translateY(-16px);
    }
    40% {
        transform: translateY(0);
    }
    70%,
    100% {
        transform: translateY(24px);
    }
}

@keyframes cut {
    0%,
    40% {
        transform: translate(-.5px, -16px) scaleX(.5);
    }
    100% {
        transform: translate(-.5px, 24px) scaleX(.5);
    }
}

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

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

body {
    min-height: 100vh;
    display: flex;
    font-family: 'Inter', Arial;
    justify-content: center;
    align-items: center;
    background: #ECEFFC;
    
    .twitter {
        position: fixed;
        display: block;
        right: 16px;
        bottom: 16px;
        svg {
            width: 32px;
            height: 32px;
            fill: #1da1f2;
        }
    }
}

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