When writing in input the text starts in the middle instead of the beginning

Question

When writing in the input the text starts in the middle instead of the beginning. How do I change it? I already changed the padding but the text stays in the middle.

Sample image:

Code:

    Widget build(BuildContext context) {
return Scaffold(
  appBar: AppBar(
    elevation: (0),
    backgroundColor: Colors.grey[50],
    leading: IconButton(
      icon: Icon(Icons.arrow_back, size: 40),
      color: Colors.grey[600],
      onPressed: () {},
    ),
  ),
  body: Center(
    child: Column(
      children: <Widget>[
        Container(
          margin: EdgeInsets.fromLTRB(25, 15, 220, 50),
          padding: EdgeInsets.only(top: 20.0),
          child: Text(
            "Cadastro",
            style: TextStyle(
                fontSize: 36,
                fontWeight: FontWeight.bold,
                color: Colors.grey[600]),
          ),
        ),
        Row(mainAxisAlignment: MainAxisAlignment.start, children: <Widget>[
          Container(
            padding: EdgeInsets.fromLTRB(50, 10, 50, 10),
            alignment: Alignment.center,
            child: Text("Nome",
                style: TextStyle(
                  fontSize: 17,
                )),
          )
        ]),
        Container(
          margin: EdgeInsets.only(),
          padding: EdgeInsets.fromLTRB(50, 10, 50, 10),
          child: TextFormField(
            decoration: InputDecoration(
              contentPadding: EdgeInsets.fromLTRB(50, 38, 50, 10),
              filled: true,
              fillColor: Colors.white,
              border: OutlineInputBorder(
                borderRadius: BorderRadius.circular(5),
              ),
            ),
          ),
        ),
        Row(mainAxisAlignment: MainAxisAlignment.start, children: <Widget>[
          Container(
            padding: EdgeInsets.fromLTRB(50, 10, 50, 10),
            alignment: Alignment.center,
            child: Text("E-mail",
                style: TextStyle(
                  fontSize: 17,
                )),
          )
        ]),

Answer 1

Your problem is in question the padding...

  TextFormField(
    decoration: InputDecoration(
      contentPadding: EdgeInsets.fromLTRB(50, 38, 50, 10),
      filled: true,
      fillColor: Colors.blue,
      
      border: OutlineInputBorder(
        borderRadius: BorderRadius.circular(5),
      ),
    ),
  ),

Are you wearing a contentpadding, which in turn puts "spaces" on each side...

So that the text starts at the beginning of your Textformfield, just decrease the padding LEFT:

contentPadding: EdgeInsets.fromLTRB(10, 38, 50, 10),

Explanation

The contentPadding will create internal spacing within your Widget, in relation to the content of the same, this property asks for a EdgeInsetsGeometry that in turn you are using the fromLTRB

That guy means:

EdgeInsets.fromLTRB(left, top, right, bottom)