@Html.ValidationSummary(false, "", new {})
<form
    asp-controller="Login" asp-action="Login"
    asp-route-redirect="@ViewData["RedirectTo"]"
    method="POST" type="application/x-www-form-urlencoded"
    style="text-align:center; margin-top: 100px">
    
    <input type="text" class="h2 blueunderline" name="username" placeholder="Username" required>
    <br>
    <br>
    <input type="password" class="h2 blueunderline" name="password" placeholder="Password" required>
    <br>
    <br>
    <input type="submit" class="h2 submitpost" value="Login">
    <br>
    <br>
    <span style="color:#05b">Don't have an account? <a asp-controller="Registration" asp-action="Register">Register</a></span>
</form>