After the end user hits the enter key, the first line is shifted down in the content area in Chrome

Description

When the user starts editing the contents, the first line is on the top. But after he hits the enter key, the line will be moved down and shows a lot of top margin.

The observed behavior happens in Chrome, when the editor is configured to insert paragraphs on enter key (NewLineMode="P").

The browser injects the following Chrome specific styles for P elements, which shifts the paragraph tag because of the applied -webkit-margin-before style:

p {
    display: block;
    -webkit-margin-before: 1em;
    -webkit-margin-after: 1em;
    -webkit-margin-start: 0px;
    -webkit-margin-end: 0px;
}

Solution

The solution is to override the -webkit-margin-before style by importing your own Content.css file via the CssFiles property in the content area:

Default.aspx

<telerik:RadEditor runat="server" NewLineMode="P" ID="RadEditor1">
    <CssFiles>
        <telerik:EditorCssFile Value="~/Content.css" />
    </CssFiles>
    <Content>some content</Content>
</telerik:RadEditor>

The contents of the Content.css should be:

p {
    -webkit-margin-before: 0 !important;
}

Pro Tips

You can find more ways to customize the content area appearance in the following online resources:

• Customize Content Area (demo)
• Setting Default Styles (documentation)
• External CSS Files (documentation