jetpack compose - Weight modifier

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.layout.*
import androidx.compose.foundation.layout.Column
import androidx.compose.runtime.*
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 {
            MainContent()
        }
    }


    @Composable
    fun MainContent(){
        Column(
            Modifier
                .background(Color(0xFFEDEAE0))
                .fillMaxSize()
                .padding(16.dp)
        ) {
            Box(
                modifier = Modifier
                    .fillMaxWidth()
                    .background(Color(0XFF8DB600))
                    .weight(1F)
            )
            Box(
                modifier = Modifier
                    .fillMaxWidth()
                    .background(Color(0XFFAB274F))
                    .weight(2F)
            )
            Box(
                modifier = Modifier
                    .fillMaxWidth()
                    .background(Color(0XFF4B5320))
                    .weight(1F)
            )
        }
    }


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