jetpack compose - Row spacing

MainActivity.kt

package com.cfsuman.jetpackcompose

import androidx.appcompat.app.AppCompatActivity
import android.os.Bundle
import androidx.activity.compose.setContent
import androidx.compose.foundation.background
import androidx.compose.foundation.horizontalScroll
import androidx.compose.foundation.layout.*
import androidx.compose.foundation.rememberScrollState
import androidx.compose.material.*
import androidx.compose.runtime.*
import androidx.compose.ui.Alignment
import androidx.compose.ui.Modifier
import androidx.compose.ui.graphics.Color
import androidx.compose.ui.tooling.preview.Preview
import androidx.compose.ui.unit.dp

class MainActivity : AppCompatActivity() {
    override fun onCreate(savedInstanceState: Bundle?) {
        super.onCreate(savedInstanceState)

        setContent {
            GetScaffold()
        }
    }


    @Composable
    fun GetScaffold(){
        Scaffold(
            topBar = {TopAppBar(
                title = {Text(
                    "Compose - Row Spacing",
                    color = Color.White)},
                backgroundColor = Color(0xFF960018)) },
            content = {MainContent()},
            backgroundColor = Color(0xFFEDEAE0)
        )
    }


    @Composable
    fun MainContent(){
        val scrollState = rememberScrollState()

        Row(
            modifier = Modifier
                .background(Color(0xFF96C8A2))
                .fillMaxWidth()
                .height(125.dp)
                .padding(12.dp)
                .horizontalScroll(scrollState),
            horizontalArrangement = Arrangement.spacedBy(12.dp)

        ) {
            repeat(100){ counter ->
                Card(
                    backgroundColor = if(counter%2 == 0)
                        Color(0xFF00B7EB) else Color(0xFFA7D8DE),
                    modifier = Modifier
                        .width(125.dp)
                        .fillMaxHeight()
                ){
                    Box(contentAlignment = Alignment.Center){
                        Text(
                            text = "${counter+1}",
                            style = MaterialTheme.typography.h4
                        )
                    }
                }
            }
        }
    }


    @Preview
    @Composable
    fun ComposablePreview(){
        //GetScaffold()
    }
}