In html, set the scroll bar to automatically display when the content in the div exceeds

In html, set the scroll bar to automatically display when the content in the div exceeds
In HTML pages, we sometimes need to automatically display a scroll bar after the content in a div exceeds the limit. We can set it like this:

Copy code
The code is as follows:

<div class="classlist">
<div class="autoScroll">
<asp:RadioButtonList ID="rblClasses" runat="server" DataTextField="className" DataValueField="classID"
ForeColor="#FF4040">
</asp:RadioButtonList>

<asp:ImageButton ID="imgSure" runat="server" ImageUrl="~/images/c_sure.jpg" />
<asp:ImageButton ID="imgClose" runat="server" ImageUrl="~/images/c_close.jpg" />
</div>
</div>

Then, set the style like this:

Copy code
The code is as follows:

<style type="text/css">
.classlist
{
width: 300px;
height: 20px;
}
.autoScroll
{
width:300px;
height:100px;
overflow:auto;
}
#rblClasses
{
margin-left: 20px;
}
</style>

After setting, when the content displayed in the radiobutton exceeds the outermost div, a scroll bar will be automatically displayed, that is, the nested div

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