element-web-Github/res/css/views/beta/_BetaCard.scss

/*
Copyright 2021 The Matrix.org Foundation C.I.C.

Licensed under the Apache License, Version 2.0 (the "License");
you may not use this file except in compliance with the License.
You may obtain a copy of the License at

    http://www.apache.org/licenses/LICENSE-2.0

Unless required by applicable law or agreed to in writing, software
distributed under the License is distributed on an "AS IS" BASIS,
WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
See the License for the specific language governing permissions and
limitations under the License.
*/

.mx_BetaCard {
    margin-bottom: 20px;
    padding: 24px;
    background-color: $system;
    border-radius: 8px;
    box-sizing: border-box;
    color: $secondary-content;

    .mx_BetaCard_columns {
        display: flex;
        flex-flow: wrap;
        gap: 20px;
        justify-content: center;

        .mx_BetaCard_columns_description {
            flex: 1;

            .mx_BetaCard_title {
                font-weight: $font-semi-bold;
                font-size: $font-18px;
                line-height: $font-22px;
                color: $primary-content;
                margin: 4px 0 14px;

                display: flex;
                align-items: center;
                column-gap: 12px;
            }

            .mx_BetaCard_caption {
                font-size: $font-15px;
                line-height: $font-20px;
            }

            .mx_BetaCard_buttons {
                display: flex;
                flex-wrap: wrap-reverse;
                gap: $spacing-12;
                margin: $spacing-20 auto 0;

                .mx_AccessibleButton {
                    padding: 7px 40px;
                    width: auto;
                    flex: 1;
                    white-space: nowrap; // text might overflow

                    &:nth-child(1) {
                        order: 2; // Place feedback button top and right
                    }
                }
            }

            .mx_BetaCard_refreshWarning {
                margin-top: $spacing-8;
                font-size: $font-10px;
                text-align: center;
            }

            .mx_BetaCard_faq {
                margin-top: $spacing-20;
                font-size: $font-12px;
                line-height: $font-15px;

                > h4 {
                    margin: 12px 0 0;
                }

                > p {
                    margin: 0;
                }
            }
        }

        .mx_BetaCard_columns_image_wrapper {
            margin: auto 0;

            .mx_BetaCard_columns_image {
                width: 100%;
                max-width: 300px;
                object-fit: contain;
                height: 100%;
                border-radius: 4px;
            }
        }
    }

    .mx_BetaCard_relatedSettings {
        .mx_SettingsFlag {
            margin: 16px 0 0;
            font-size: $font-15px;
            line-height: $font-24px;
            color: $primary-content;

            .mx_SettingsFlag_microcopy {
                margin-top: 4px;
                font-size: $font-12px;
                line-height: $font-15px;
            }
        }
    }
}

.mx_BetaCard_betaPill {
    background-color: $accent-alt;
    padding: 4px 10px;
    border-radius: 8px;
    text-transform: uppercase;
    font-size: 12px;
    font-weight: $font-semi-bold;
    line-height: 15px;
    color: $button-primary-fg-color;
    display: inline-block;
    vertical-align: text-bottom;
    word-break: keep-all; // avoid multiple lines on CJK language

    &.mx_AccessibleButton {
        cursor: pointer;
    }
}

$pulse-color: $accent-alt;
$dot-size: 12px;

.mx_BetaDot {
    border-radius: 50%;
    margin: 10px;
    height: $dot-size;
    width: $dot-size;
    transform: scale(1);
    background: rgba($pulse-color, 1);
    animation: mx_Beta_bluePulse 2s infinite;
    animation-iteration-count: 20;
    position: relative;
    pointer-events: none;

    &::after {
        content: "";
        position: absolute;
        width: inherit;
        height: inherit;
        top: 0;
        left: 0;
        transform: scale(1);
        transform-origin: center center;
        animation-name: mx_Beta_bluePulse_shadow;
        animation-duration: inherit;
        animation-iteration-count: inherit;
        border-radius: 50%;
        background: rgba($pulse-color, 1);
    }
}

@keyframes mx_Beta_bluePulse {
    0% {
        transform: scale(0.95);
    }

    70% {
        transform: scale(1);
    }

    100% {
        transform: scale(0.95);
    }
}

@keyframes mx_Beta_bluePulse_shadow {
    0% {
        opacity: 0.7;
    }

    70% {
        transform: scale(2.2);
        opacity: 0;
    }

    100% {
        opacity: 0;
    }
}