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Customization

The Tooltip can be customized by using the cssClass property, which accepts custom CSS class names that define specific user-defined styles and themes to be applied on the Tooltip element.

Tip pointer customization

Styling the tip pointer’s size, background, and border color’s can be done using the cssClass property, as given below.

razor
tooltip-pointer.cs
@using Syncfusion.EJ2
@using Syncfusion.EJ2.Popups
@section ControlsSection{
   @Html.EJS().Tooltip("tooltip").CssClass("customtip").Content("Tooltip arrow customized").ContentTemplate(@<div id="target">
            Show tooltip
        </div>).Render()
}
<style>
    #target {
        background-color: #ececec;
        border: 1px solid #c8c8c8;
        box-sizing: border-box;
        margin: 70px auto;
        padding: 20px;
        width: 200px;
    }


    /* csslint ignore:start */

    .customtip.e-tooltip-wrap {
        padding: 4px;
    }

        .customtip.e-tooltip-wrap .e-arrow-tip.e-tip-bottom {
            height: 20px;
            width: 12px;
        }

        .customtip.e-tooltip-wrap .e-arrow-tip.e-tip-top {
            height: 20px;
            width: 12px;
        }

        .customtip.e-tooltip-wrap .e-arrow-tip.e-tip-left {
            height: 12px;
            width: 20px;
        }

        .customtip.e-tooltip-wrap .e-arrow-tip.e-tip-right {
            height: 12px;
            width: 20px;
        }

        .customtip.e-tooltip-wrap .e-arrow-tip-outer.e-tip-bottom {
            border-left: 6px solid transparent;
            border-right: 6px solid transparent;
            border-top: 20px solid #616161;
        }

        .customtip.e-tooltip-wrap .e-arrow-tip-outer.e-tip-top {
            border-bottom: 20px solid #616161;
            border-left: 6px solid transparent;
            border-right: 6px solid transparent;
        }

        .customtip.e-tooltip-wrap .e-arrow-tip-outer.e-tip-left {
            border-bottom: 6px solid transparent;
            border-right: 20px solid #616161;
            border-top: 6px solid transparent;
        }

        .customtip.e-tooltip-wrap .e-arrow-tip-outer.e-tip-right {
            border-bottom: 6px solid transparent;
            border-left: 20px solid #616161;
            border-top: 6px solid transparent;
        }
</style>
public ActionResult TooltipPointer()
{
    return View();
}

Output be like the below.

ASP .NET Core - Tooltip - Tip Pointer Customization

Tooltip customization

The complete look and feel of the Tooltip can be customized by changing it’s background color, opacity, content font, etc. The following code example shows the way to achieve it.

razor
tooltip-view.cs
@using Syncfusion.EJ2
@using Syncfusion.EJ2.Popups
@section ControlsSection{
    @Html.EJS().Tooltip("target").CssClass("customtooltip").Content("Tooltip customized").ContentTemplate(@<div id="content">
        Show tooltip
    </div>).Render()
}
<style>
    #target {
        background-color: #ececec;
        border: 1px solid #c8c8c8;
        box-sizing: border-box;
        margin: 70px auto;
        padding: 20px;
        width: 200px;
    }


    /* csslint ignore:start */

    .customtooltip.e-tooltip-wrap .e-tip-content {
        line-height: 20px;
    }

    .customtooltip.e-tooltip-wrap .e-arrow-tip.e-tip-bottom {
        height: 12px;
        left: 50%;
        top: 100%;
        width: 24px;
    }

    .customtooltip.e-tooltip-wrap .e-arrow-tip.e-tip-top {
        height: 12px;
        left: 50%;
        top: -9px;
        width: 24px;
    }

    .customtooltip.e-tooltip-wrap .e-arrow-tip.e-tip-left {
        height: 24px;
        left: -9px;
        top: 48%;
        width: 12px;
    }

    .customtooltip.e-tooltip-wrap .e-arrow-tip.e-tip-right {
        height: 24px;
        left: 100%;
        top: 50%;
        width: 12px;
    }

    .customtooltip.e-tooltip-wrap {
        border-radius: 4px;
        opacity: 1;
    }

        .customtooltip.e-tooltip-wrap.e-popup {
            background-color: #fff;
            border: 2px solid #000;
        }

        .customtooltip.e-tooltip-wrap .e-tip-content {
            color: #000;
            font-size: 12px;
        }

        .customtooltip.e-tooltip-wrap .e-arrow-tip-outer.e-tip-bottom {
            border-left: 12px solid transparent;
            border-right: 14px solid transparent;
            border-top: 12px solid #000;
        }

        .customtooltip.e-tooltip-wrap .e-arrow-tip-outer.e-tip-top {
            border-bottom: 12px solid #000;
            border-left: 12px solid transparent;
            border-right: 12px solid transparent;
        }

        .customtooltip.e-tooltip-wrap .e-arrow-tip-outer.e-tip-left {
            border-bottom: 12px solid transparent;
            border-right: 12px solid #000;
            border-top: 12px solid transparent;
        }

        .customtooltip.e-tooltip-wrap .e-arrow-tip-outer.e-tip-right {
            border-bottom: 12px solid transparent;
            border-left: 12px solid #000;
            border-top: 12px solid transparent;
        }

        .customtooltip.e-tooltip-wrap .e-arrow-tip-inner.e-tip-bottom {
            color: #fff;
            font-size: 25.9px;
        }
</style>
public ActionResult TooltipView()
{
    return View();
}

Output be like the below.

ASP .NET Core - Tooltip - Customization