html,
body {
  height: 100%;
  font-family: calibri, verdana, arial, helvetica, sans-serif;
}

.container {
  height: 100%;
  align-content: center;
}

.input-group-prepend span {
  width: 50px;
  background-color: #990000;
  color: white;
  border: 0 !important;
}

input:focus {
  outline: 0 0 0 0 !important;
  box-shadow: 0 0 0 0 !important;
}

.login_btn {
  color: white;
  background-color: #990000;
  width: 100px;
}

.login_btn:hover {
  color: black;
  background-color: white;
}