Editor X: Using Containers
Create a responsive and structured layout for your page using container boxes. After attaching elements like text, images and buttons to a container, you can easily ensure their arrangement stays the same in every screen size. In this article, learn how to:
Add a container Attach elements to a container Apply a grid on a container Customize a container per breakpoint Set the sizing of a containerAdding a containerChoose from a variety of container boxes and drag the one you like to your page. You can either add empty containers or containers with grids to easily organize your content. To add a container:
Click Add Elements  at the top of Editor X. Click Layout Tools. Choose which kind of container you want to add: 
    
Empty Boxes: Pre-designed container boxes in many different styles and shapes. Grids: These container boxes include a grid that you can adjust later.   Drag a container onto your page. Add elements by dragging them into your container.   (Optional, from the Inspector panel ) Click the Design tab  to customize your container's design.Tell me moreDesign your container with the available options:
Fill Color & Opacity: Choose a background color for your containers and adjust the opacity. Border: Change the color and opacity of your container's border and set the width to make it thicker or thinner. Corners: Curve the corners of your container by adjusting the radius (in pixels). Shadow: Click to add and customize your container's shadow. Adjust the angle, size, distance, blur and opacity, or change the color of your shadow.Attaching elements to a containerWhen placing elements inside a container, they are automatically attached to the container and become its children elements. You can view all of the attached elements in the Layers panel. This makes your container responsive to different viewports; when the screen size changes, the attached elements resize in the same manner and in direct relation to their container.Tip:You can add an image or a video to the background of your container. Place the element inside the container to attach it, then click the Stretch icon  at the top right.Applying a grid on a containerIn Editor X, a container comes with a responsive, built-in CSS grid that has a single cell (1x1 layout). You can apply a grid with more rows and columns to organize the elements in your container. To apply a grid on a container:
Click the container in Editor X. Change the grid in one of the following ways:
    
Choose a preset grid: Click the 1x1 drop-down and choose a different grid (e.g. 2x2, 2x1) Customize the grid on the page: 

Click the Customize grid on canvas icon . Drag from the left or upper edges of the grid to add new lines.    Customizing a container per breakpointCustomize your container to different breakpoints so that it looks and behaves exactly as you want in every viewport.  
Attach elements to your container for a specific breakpoint if they should only appear in that range of screen sizes. Design and reposition the elements in your container to adjust them to a certain breakpoint. Define content overflow per breakpoint to ensure your elements don't overlap when the screen gets smaller.  Apply a grid to arrange your elements for a specific breakpoint. Learn More Working with breakpoints:
Changes that you make to a certain breakpoint cascade down to smaller breakpoints. However, these changes don't affect larger breakpoints.  Attaching or detaching elements from their parent container applies to all breakpoints. Setting the size of a containerControl the way your container and its elements resize in relation to each other, and to changes in screen size. Click the Inspector icon  at the top right to open the panel, then adjust the sizing under Sizing options. You can set fixed dimensions for your container so that it stays the same in every screen size, or use fluid measurements to make it responsive. Learn More