body {
    margin: 0;
    background-color: #666;
}
.login_container {
    display: flex;
    flex-direction: row;
    flex-wrap: wrap;
    justify-content: center; 
}
.login_container > div {
    order: 0;
    flex: 0 1 auto;
    align-self: auto;
    width: 400px;
    height: 400px;
    margin-top: 50px;
    background: #ccc;
    overflow: hidden;
    border-radius: 25px;
}
h1 {
    margin-top: 8px;
    display: flex;
    justify-content: center;
    font-family: Arial, Helvetica, sans-serif;
    font-size: 40px;
    font-weight: 600;
    color: #666;
}
div.card div {
    display: flex;
    justify-content: center;
}
input {
    font-family: Arial, Helvetica, sans-serif;
    font-size: 20px;
    padding: 10px;
    margin: 10px;
    color: #333;
    width: 80%;
}
.btn {
  background: #3498db;
  background-image: -webkit-linear-gradient(top, #3498db, #2980b9);
  background-image: -moz-linear-gradient(top, #3498db, #2980b9);
  background-image: -ms-linear-gradient(top, #3498db, #2980b9);
  background-image: -o-linear-gradient(top, #3498db, #2980b9);
  background-image: linear-gradient(to bottom, #3498db, #2980b9);
  -webkit-border-radius: 5;
  -moz-border-radius: 5;
  border-radius: 5px;
  font-family: Arial, Helvetica, sans-serif;
  color: #ffffff;
  font-size: 20px;
  padding: 10px 20px 10px 20px;
  text-decoration: none;
  margin-top: 90px;
}
.btn:hover {
  background: #3cb0fd;
  background-image: -webkit-linear-gradient(top, #3cb0fd, #3498db);
  background-image: -moz-linear-gradient(top, #3cb0fd, #3498db);
  background-image: -ms-linear-gradient(top, #3cb0fd, #3498db);
  background-image: -o-linear-gradient(top, #3cb0fd, #3498db);
  background-image: linear-gradient(to bottom, #3cb0fd, #3498db);
  text-decoration: none;
}
.header {
    height: 60px;
    width: 100%;
    white-space: nowrap;
    background-color: orange;
    margin-bottom: 20px;
}