Hi @dors9590,

If you use the component MDBCardGroup all cards inside are positioned horizontally.

Button inside cards is an external element, so you can position it as you want using CSS flexbox or other CSS rules.

Simple example without button positioning:

import React from 'react';
import {
  MDBBtn,
  MDBCard,
  MDBCardBody,
  MDBCardGroup,
  MDBCardText,
  MDBCardTitle,
  MDBCardVideo,
} from 'mdbreact';
function App() {
  return (
    <div style={{ maxHeight: '30vh', marginTop: '10vh' }} className='container'>
      <MDBCardGroup>
        <MDBCard>
          <MDBCardVideo
            src='https://www.youtube.com/embed/uMQ63tI_h2Y'
            ratio='1by1'
          />
          <MDBCardBody>
            <MDBCardTitle tag='h5'>1:1 Aspect ratio</MDBCardTitle>
            <MDBCardText>
              Some quick example text to build on the card title and make up the
              bulk of the card's content.
            </MDBCardText>
            <MDBBtn color='primary' size='md'>
              read more
            </MDBBtn>
          </MDBCardBody>
        </MDBCard>

        <MDBCard>
          <MDBCardVideo
            src='https://www.youtube.com/embed/980CZbPAtQU'
            ratio='4by3'
          />
          <MDBCardBody>
            <MDBCardTitle tag='h5'>4:3 Aspect ratio</MDBCardTitle>
            <MDBCardText>
              Some quick example text to build on the card title and make up the
              bulk of the card's content.
            </MDBCardText>
            <MDBBtn color='primary' size='md'>
              read more
            </MDBBtn>
          </MDBCardBody>
        </MDBCard>

        <MDBCard>
          <MDBCardVideo
            src='https://player.vimeo.com/video/137857207'
            ratio='16by9'
          />
          <MDBCardBody>
            <MDBCardTitle tag='h5'>16:9 Aspect ratio</MDBCardTitle>
            <MDBCardText>
              Some quick example text to build on the card title and make up the
              bulk of the card's content.
            </MDBCardText>
            <MDBBtn color='primary' size='md'>
              read more
            </MDBBtn>
          </MDBCardBody>
        </MDBCard>
      </MDBCardGroup>
    </div>
  );
}

export default App;

Best, Kuba