Which HTML attribute is used for defining an inline styles on controls?

style html attribute is used to define an inline style,which is aplied on control and also written in control definition.
For Example:-
<asp:TextBox ID="TextBox1" runat="server" Style="text-align:left;border-color:red;"></asp:TextBox>
<asp:Label ID="Label1" runat="server" Style="width:100px;font-weight:bold;" Text="Name"></asp:Label>