Using flex to achieve two rows and one column layout [duplicate] - html

Question

This question already has answers here:
Make a div span two rows in a grid
(2 answers)
Closed 3 years ago.
I'm trying to use flexbox to achieve a column layout with an element "floated" to the right.
Something like this:
Thing is, I cannot alter the HTML since it's an embedded form so trying to achieve this via pure CSS.
So far, I have this:
.form {
display: flex;
flex-direction: column;
text-align: center;
}
.form-container {
display: flex;
flex-direction: column;
text-align: center;
justify-content: space-between;
}
.form-form {
width: 100%;
}
form {
display: flex;
justify-content: center;
}
fieldset {
border: 0;
}
textarea {
resize: none;
}
.form-columns-2 {
display: flex;
}
.form-columns-2 input:first-child {
margin-bottom: .5em
}
.form-columns-1 textarea {
height: 100%
}
.submit-wrapper{
flex-direction:column;
}
<div class="form">
<div class="form-container">
<div class="form-form">
<form>
<fieldset class="form-columns-2">
<input type="text" placeholder="test">
<input type="text" placeholder="test">
</fieldset>
<fieldset class="form-columns-2">
<input type="text" placeholder="test">
<input type="text" placeholder="test">
</fieldset>
<fieldset class="form-columns-1">
<textarea placeholder="test">Text</textarea>
</fieldset>
<div class="submit-wrapper">
<div class="actions">
<input type="submit" value="Submit">
</div>
</div>
</form>
</div>
</div>
</div>
Edit:
I also need the submit button to sit under the textarea, but since the .submit-wrapper is a direct child of form, the only way I can see addressing this is by adding flex-direction: column; to form. However, this turns the whole layout into a column, which I do not want.

Answer 1

You are apllying display: flex to the wrong elements and to more elements than you need to.
Check this: https://codepen.io/anon/pen/dwPoEP
* {
box-sizing: border-box;
}
fieldset{
border:0;
}
textarea{
resize:none;
}
form { // you want the form to be a flex box, not everything!
display: flex;
justify-content: center;
}
.form-columns-2 {
display: flex; //you can use other options here, this works but you can use display: block on the inputs for example
}
// this 2 are just to make it look like the image
.form-columns-2 input:first-child {
margin-bottom: .5em
}
.form-columns-1 textarea {
height: 100%
}