html,
body {
  height: 100%;
}

body {
  display: flex;
  align-items: center;
  padding-top: 40px;
  padding-bottom: 40px;
  background-color: #f5f5f5;
}

.form-signin {
  max-width: 330px;
  padding: 15px;
}

.form-signin .form-floating:focus-within {
  z-index: 2;
  color: gray;
}

.form-signin .form-floating>label {
   color: black;
}

.form-signin input[type="password"] {
  margin-bottom: 10px;
  color: red!important;
}