I have made a complete Bootstrap grid system. I am now uploading my code to a CMS system, and can see there is some CSS from the backend, there is messing up my grid.

If I untick the following code in the inspector window, everything is looking perfect. When the following code is ticked in the inspector window everything is messed up. Is it possible to overwrite this code somehow, so the class is not used?

```
.cms-area img {
    width: 100%;
}

```