fronend/scss/_dialogs.scss

.sweet-alert {
    @include border-radius(0 !important);

    p {
        font-size: 14px !important;
    }

    .sa-input-error {
        top: 23px !important;
        right: 13px !important;
    }

    h2 {
        font-size: 18px !important;
        margin: 0 0 5px 0 !important;
    }

    button {
        font-size: 15px !important;
        @include border-radius(0 !important);
        padding: 5px 20px !important;
    }
}