:root {
    --bch-zindex: 100;
    --bch-bottom-space: 20px;
    --bch-horizontal-space: 20px;
    --bch-button-size: 48px;
    --bch-svg-size: 36px;
    --bch-item-space: 1em;
    --bch-border-radius: 12px;
    --bch-color-border: #fefefe;
    --bch-color-white: #fff;
    --bch-color-text: #fff;
    --bch-bgcolor-text: #777;
    --bch-bgcolor-dark: #333;
    --bch-bgcolor-zalo: #0091ff;
    --bch-bgcolor-messenger: #1877f2;
    --bch-bgcolor-WhatsApp: #29a71a;
    --bch-bgcolor-phone: #ff6a00;
    --bch-bgcolor-button: #dc3545;
}
.bch-block {
    position: fixed;
    bottom: var(--bch-bottom-space);
    z-index: var(--bch-zindex)
}
.bch-block * {
    box-sizing: border-box
}
.bch-block.position-left {
    left: var(--bch-bottom-space)
}
.bch-block.position-right {
    right: var(--bch-bottom-space)
}
.bch-block.position-left-center {
    bottom: 50%;
    left: var(--bch-bottom-space)
}
.bch-block.position-right-center {
    bottom: 50%;
    right: var(--bch-bottom-space)
}
.bch-block.position-left-center .bch-block__text,.bch-block.position-left .bch-block__text {
    margin-left: .5em
}
.bch-block.position-right-center .bch-block__text,.bch-block.position-right .bch-block__text {
    margin-right: .5em
}
.bch-block.position-left-center .bch-block__item,.bch-block.position-left .bch-block__item {
    justify-content: flex-start
}
.bch-block.position-right-center .bch-block__item,.bch-block.position-right .bch-block__item {
    justify-content: flex-end
}
.bch-block.position-right-center .bch-block__toggle-button,.bch-block.position-right .bch-block__toggle-button {
    align-self: flex-end
}
.bch-block.position-left-center .bch-block__url,.bch-block.position-left .bch-block__url {
    flex-direction: row-reverse
}
.bch-block.text-hover .bch-block__text {
    opacity: 0;
    transform: translateY(4px);
    pointer-events: none;
    transition: transform .4s ease-in-out;
    will-change: transform
}
.bch-block.text-hover .bch-block__item:hover .bch-block__text {
    opacity: 1;
    transform: translateY(0)
}
.bch-block__inner {
    display: flex;
    flex-direction: column
}
.bch-block__list {
    margin: 0;
    padding: 0;
    list-style: none;
    transition: transform .4s ease-in-out,opacity .4s ease-in-out
}
.bch-block__item,.bch-block__url {
    display: flex;
    align-items: center
}
.bch-block__url {
    text-decoration: none
}
.bch-block__item {
    margin-bottom: var(--bch-item-space)
}
.bch-block__item.is-messenger:hover .bch-block__text,.bch-block__item.is-messenger .bch-block__icon {
    background: var(--bch-bgcolor-messenger)
}
.bch-block__item.is-WhatsApp:hover .bch-block__text,.bch-block__item.is-WhatsApp .bch-block__icon {
    background: var(--bch-bgcolor-WhatsApp)
}
.bch-block__item.is-zalo:hover .bch-block__text,.bch-block__item.is-zalo .bch-block__icon {
    background: var(--bch-bgcolor-zalo)
}
.bch-block__item.is-phone:hover .bch-block__text,.bch-block__item.is-phone .bch-block__icon {
    background: var(--bch-bgcolor-phone)
}
.bch-block__text {
    display: inline-block;
    padding: 4px 8px;
    background: var(--bch-bgcolor-text);
    color: var(--bch-color-text);
    font-size: 13px;
    box-shadow: #63636333 0 2px 8px;
    border: 2px solid var(--bch-color-border);
    border-radius: var(--bch-border-radius);
    user-select: none;
    pointer-events: none;
    transition: all .4s ease
}
.bch-block__icon {
    display: flex;
    align-items: center;
    justify-content: center;
    flex-direction: column;
    width: var(--bch-button-size);
    height: var(--bch-button-size);
    padding: 6px;
    background: var(--bch-bgcolor-dark);
    animation: ring 1s linear infinite;
    border-radius: 50%;
    border: 3px solid var(--bch-bgcolor-white)
}
.bch-block__icon svg {
    width: var(--bch-svg-size);
    height: var(--bch-svg-size);
    fill: var(--bch-color-white)
}
.bch-block .bch-block__inner .bch-block__toggle-button {
    position: relative;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    margin-top: .25em;
    width: 48px;
    height: 48px;
    background: var(--bch-bgcolor-dark);
    color: var(--bch-color-text);
    border: 2px solid var(--bch-color-border);
    border-radius: 50%;
    cursor: pointer;
    transition: all .5s ease;
    overflow: hidden
}
.bch-block__toggle-button svg {
    width: 32px;
    height: 32px;
    fill: var(--bch-color-white)
}
.bch-block__toggle-button span {
    position: absolute;
    top: 4px;
    left: 4px;
    width: 36px;
    height: 36px;
    z-index: 1;
    pointer-events: none;
    transition: transform .5s ease-in-out
}
@keyframes ring {
    0% {
        transform: scaleZ(1)
    }
    10%,20% {
        transform: scale3d(.9,.9,.9) rotate3d(0,0,1,-3deg)
    }
    30%,50%,70%,90% {
        transform: scale3d(1.1,1.1,1.1) rotate3d(0,0,1,3deg)
    }
    40%,60%,80% {
        transform: scale3d(1.1,1.1,1.1) rotate3d(0,0,1,-3deg)
    }
    to {
        transform: scaleZ(1)
    }
}
.bch-block .open-icon {
    transform: translateY(150%)
}
.bch-block.is-hidden .open-icon {
    transform: translateY(0)
}
.bch-block.is-hidden .close-icon {
    transform: translateY(150%)
}
.bch-block__list {
    opacity: 1;
    transform: translateY(0)
}
.bch-block.is-hidden .bch-block__list {
    opacity: 0;
    transform: translateY(15px);
    pointer-events: none;
    transition: .5s ease-in-out
}
.bch-block.is-hidden .bch-block__toggle-button {
    background: var(--bch-bgcolor-button)
}