jitsi-meet/css/_prejoin-dialog.scss

.prejoin-dialog {
    background: #1C2025;
    box-shadow: 0px 2px 20px rgba(0, 0, 0, 0.5);
    border-radius: 5px;
    color: #fff;
    height: 400px;
    width: 375px;

    &--small {
        height: 300;
        width: 400;
    }

    &-label {
        font-size: 15px;
        line-height: 24px;

        &-num {
            background: #2b3b4b;
            border: 1px solid #A4B8D1;
            border-radius: 50%;
            color: #fff;
            display: inline-block;
            height: 24px;
            margin-right: 8px;
            width: 24px;
        }
    }

    &-container {
        align-items: center;
        background: rgba(0,0,0,0.6);
        display: flex;
        height: 100vh;
        justify-content: center;
        left: 0;
        position: absolute;
        top: 0;
        width: 100vw;
        z-index: 3;
    }

    &-flag {
        display: inline-block;
        margin-right: 8px;
        transform: scale(1.2);
    }

    &-title {
        display: inline-block;
        font-size: 24px;
        line-height: 32px;
    }

    &-icon {
        cursor: pointer;

        > svg {
            fill: #A4B8D1;
        }
    }

    &-btn {
        width: 309px;
    }

    &-dialin-container {
        text-align: center;
    }

    &-delimiter {
        background: #5f6266;
        border: 0;
        height: 1px;
        margin: 0;
        padding: 0;
        width: 100%;

        &-container {
            margin: 16px 0 24px 0;
            position: relative;
        }

        &-txt-container {
            position: absolute;
            text-align: center;
            top: -8px;
            width: 100%;
        }

        &-txt {
            background: #1C2025;
            color: #5f6266;
            font-size: 11px;
            text-transform: uppercase;
            padding: 0 8px;
        }
    }

    .prejoin-dialog-btn.primary,
    .action-btn.prejoin-dialog-btn.text {
        width: 310px;
    }
}

.prejoin-dialog-callout {
    padding: 16px;

    &-header {
        display: flex;
        justify-content: space-between;
        margin-bottom: 24px;
    }

    &-picker {
        margin: 8px 0 16px 0;
    }
}

.prejoin-dialog-dialin {
    text-align: center;

    &-header {
        align-items: center;
        margin: 16px 0 32px 16px;
        display: flex;
    }

    &-icon {
        margin-right: 16px;
    }

    &-num {
        background: #3e474f;
        border-radius: 4px;
        display: inline-block;
        font-size: 15px;
        line-height: 24px;
        margin: 4px;
        padding: 8px;

        &-container {
            min-height: 48px;
            margin: 8px 0;
        }
    }

    &-link {
        color: #6FB1EA;
        cursor: pointer;
        display: inline-block;
        font-size: 13px;
        line-height: 20px;
        margin-bottom: 24px;
    }

    &-spaced-label {
        margin-bottom: 16px;
        margin-top: 28px;
    }

    &-btns {
        &> div {
            margin-bottom: 16px;
        }
    }
}

.prejoin-dialog-calling {
    padding: 16px;
    text-align: center;

    &-header {
        text-align: right;
    }

    &-label {
        font-size: 15px;
        margin: 8px 0 16px 0;
    }

    &-number {
        font-size: 19px;
        line-height: 28px;
        margin: 16px 0;
    }
}