How can I lock the size of an image in Webflow so that it remains the same within a circle or line, even when I replace the image?

To lock the size of an image within a specific shape, such as a circle or a line, in Webflow, you can use a combination of CSS properties and styling techniques. Let me walk you through the steps:

1. Add a Div Block: Start by adding a Div block to your Webflow project. This will serve as the container for your image.

2. Style the Div Block: Select the Div block and set its desired width and height to create the container shape (e.g., a circle). You can set these dimensions using either percentages or pixels.

3. Add the Image: Inside the Div block, add an Image element by dragging it from the Elements panel or by right-clicking on the Div block and selecting "Add Nested Element" > "Image".

4. Set the Image as Background: With the Image selected, go to the Styles panel and remove the source file in the "Image" field. Instead, scroll down to the "Background" section, select the "Image" option, and add the desired image file using the "Choose Image" button. Ensure that the "Background Repeat" property is set to "No Repeat".

5. Adjust Background Size: Still in the Styles panel, scroll down to the "Background Size" property and select "Cover". This ensures that the background image fills the container shape while maintaining its aspect ratio.

6. Center the Background: To ensure the image is centered within the container, go to the "Background Position" property and select "Center Center".

7. Lock the Size: Finally, to prevent the image from scaling or changing size when you replace it with a different image, you'll need to add custom CSS styles. Click on the "+" icon in the Styles panel to open the Custom Code section. Under the "Head Code" tab, add the following CSS:

```css

```

Replace `.div-class` with the class name of your Div block.

By setting the `background-size` property to `100% 100%`, you're ensuring that the background image within the Div block always fits perfectly, regardless of the image's aspect ratio or dimensions.

Remember to assign a specific class to your Div block by selecting it and going to the Styles panel > "Selector" field. Add a class name (e.g., "div-class") and use that name in the CSS code provided above.

This approach locks the size of the image within the designated shape, ensuring that it remains the same when you replace the image.