jitsi-meet/css/_inlay.scss

.inlay {
    margin-top: 14%;
    @include border-radius(3px);
    padding: 40px 38px 44px;
    color: #fff;
    background: lighten(desaturate($defaultBackground, 70%), 20%);
    text-align: center;

    &__title {
        margin: 17px 0;
        padding-bottom: 17px;
        color: $popoverFontColor;
        font-size: 21px;
        letter-spacing: 0.3px;
        border-bottom: 1px solid $auiBorderColor;
    }

    &__text {
        color: $popoverFontColor;
        display: block;
        margin-top: 22px;
        font-size: 16px;
    }

    &__icon {
        margin: 0 10px;
        font-size: 50px;
    }

    &__button {
        float: none !important;
    }
}