<div class="row">
    <div class="col-2">
        <TelerikButton ButtonType="Telerik.Blazor.ButtonType.Button"
                       Icon="k-icon k-i-add"
                       Primary="true">
            New Value
        </TelerikButton>
    </div>

    <div class="col-10">
        <TelerikMultiSelect Data="@(
                                            new List<SelectListItem>()
                                            {
                                                { new SelectListItem { Text = "Text 1", Value = "Value1" } },
                                                { new SelectListItem { Text = "Text 2", Value = "Value2" } },
                                                { new SelectListItem { Text = "Text 3", Value = "Value3" } },
                                                { new SelectListItem { Text = "Text 4", Value = "Value4" } }
                                            })"
                            FilterOperator="StringFilterOperator.Contains"
                            Filterable="true"
                            TItem="SelectListItem"
                            TValue="string"
                            TextField="Text"
                            ValueField="Value">
            <FooterTemplate>
                <TelerikButton ButtonType="Telerik.Blazor.ButtonType.Button"
                               Class="my-nested-button"
                               Icon="k-icon k-i-add"
                               Primary="true">
                    New Value
                </TelerikButton>
            </FooterTemplate>
        </TelerikMultiSelect>
    </div>
</div>

@code{
    public class SelectListItem
    {
        public string Value { get; set; }
        public string Text { get; set; }
    }
}

<style>
    .k-list-container .k-button.my-nested-button {
        background-color: #ff6358;
        align-items: flex-start;
        align-self: flex-start;
    }

    .k-list-container .k-button-primary.my-nested-button,
    .k-list-container .k-button.k-primary.my-nested-button {
        /*copy the colors from the basic button*/
        border-color: #ff6358;
        color: #ffffff;
        background-color: #ff6358;
        background-image: linear-gradient(rgba(0, 0, 0, 0), rgba(0, 0, 0, 0.04));
        /*change the flex alignment form the parent container*/
        align-items: flex-start;
        align-self: flex-start;
    }
</style>