When you drop elements onto your template, they automatically resize based on the available space.
For example, if we drop a text element using the drop-bar on the bottom of the image, then our new text element automatically scales to be the same width as the element above:

You can also manually change the width of an element.
To do this:
- Click on the edge of the space between two elements so that the double arrow appears
- Now drag the edge of your element left or right to change the width as required.
- As you drag, a guideline ruler will appear along with indicators to show what percentage of the container the left and right hand sides will take up.
- Release the edge and the other elements within the container will automatically adjust to fit the new element.