Form validation with tag-helper asp.net core 3.1 not show in red

I have a simple web application with create page using form with validations.

.cs code:

public class OneTask
    {
        public int Id { get; set; }
        [Required] public string Title { get; set; }
        [Required][MinLength(10)]
        public string Description { get; set; }
        [Required, Range(1,5)] public int Priority { get; set; }
    }

.cshtml code:

<div class="container" style="width:50%">
    <div asp-validation-summary="All"></div>
    <form asp-page="CreateTask" class="" method="post">
        <div class="form-group">
            <label asp-for="NewTask.Title">Title</label>
            <input asp-for="NewTask.Title" class="form-control" />
// rest of form here...

validation scripts:

<script src="~/lib/jquery-validation/dist/jquery.validate.min.js"></script>
<script src="~/lib/jquery-validation-unobtrusive/jquery.validate.unobtrusive.min.js"></script>

Instead of showing error validations in red it shows it in black.

---------------------------------------------|

• The Title field is required.
• The Description field is required.
• The value '' is invalid.

---------------------------------------------|

Can you help ?

Just add class="text-danger" to change the text color

<div class="text-danger" asp-validation-summary="All"></div>