C# mvc Html and css are not connecting

For some strange reason my css does not seem to connect Html

_layout.cshtml:

>
<html lang="en">
<head>
<meta charset="utf-8" />
<meta name="viewport" content="width=device-width, initial-scale=1.0" />
<title>@ViewData["Title"] - test4title>
<link rel="stylesheet" href="~/css/site.css" />
head>
<body>
<div id="Navbar">
<div id="Navcentered">
<div class="Navbuttons"> Homediv>
<div class="Navbuttons"> Uploaddiv>
<div class="Navbuttons"> Logindiv>
div>
div>
<div class="Thecontainer">
@RenderBody()
div>
<footer class="border-top footer text-muted">
<div class="container">
© 2021 - test4 - <a asp-area="" asp-controller="Home" asp-action="Privacy">Privacya>
div>
footer>
body>
html>

Site.css

In the Index.cshtml it does seem to connect:

@model IEnumerable<test4.Models.Product>
@{
ViewData["Title"] = "Index";
}
<h1>storeh1>
<h2>list here: @ViewBag.Messageh2>
<h2>last: @ViewBag.Message2h2>
<h2>count: @ViewBag.counth2>
<form asp-controller="Products" asp-action="Index">
<p>
Title: <input type="text" name="SearchString" />
Description: <input type="text" name="Description" />
<input type="submit" value="Filter" />
p>
form>
<div class="container-field">
@foreach (var item in Model)
{
<div class="card">
<div class="card-image"> <img src="~/Images/Example.jpg" alt="example Picture" width="200" height="200" /> div>
<h2> @Html.DisplayFor(modelItem => item.Title)h2>
<h3> Price: @Html.DisplayFor(modelItem => item.Price)h3>
<p> @Html.DisplayFor(modelItem => item.ProductDescription)p>
<p> stocks: @Html.DisplayFor(modelItem => item.Stock)p>
<a asp-action="Details" asp-route-id="@item.Id">Viewa>
div>
}
div>