<style>
* {box-sizing: border-box;}

body {
  margin: 0;
  font-family: Arial, Helvetica, sans-serif;
}

.bofooter {
  overflow: hidden;
  background-color: #e9e9e9;
}
.bofooter a {
  float: center;
  display: block;
  color: black;
  text-align: center;
  padding: 14px 16px;
  text-decoration: none;
  font-size: 17px;
}

.bofooter a:hover {
  background-color: #ddd;
  color: black;
}

.bofooter a.active {
  background-color: #2196F3;
  color: white;
}

.bofooter .login-container button {
  float: center;
  padding: 6px 10px;
  margin-top: 8px;
  margin-right: 16px;
  background-color: #555;
  color: white;
  font-size: 17px;
  border: none;
  cursor: pointer;
}

.bofooter .login-container {
  float: right;
}

.topnav {
  overflow: hidden;
  background-color: #e9e9e9;
}

.topnav a {
  float: left;
  display: block;
  color: black;
  text-align: center;
  padding: 14px 16px;
  text-decoration: none;
  font-size: 17px;
}

.topnav a:hover {
  background-color: #ddd;
  color: black;
}

.topnav a.active {
  background-color: #2196F3;
  color: white;
}

.topnav .login-container {
  float: right;
}

.topnav input[type=text] {
  padding: 6px;
  margin-top: 8px;
  font-size: 17px;
  border: none;
  width:280px;
}

.topnav input[type=password] {
  padding: 6px;
  margin-top: 8px;
  font-size: 17px;
  border: none;
  width:280px;
}

.topnav .login-container button {
  float: right;
  padding: 6px 10px;
  margin-top: 8px;
  margin-right: 16px;
  background-color: #555;
  color: white;
  font-size: 17px;
  border: none;
  cursor: pointer;
}

.topnav .login-container button:hover {
  background-color: #2196F3;
}

@media screen and (max-width: 600px) {
  .topnav .login-container  {
    float: none;
  }
  .topnav a, .topnav input[type=text],.topnav input[type=password], .topnav .login-container  button {
    float: none;
    display: block;
    text-align: left;
    width: 100%;
    margin: 0;
    padding: 14px;
  }
  .topnav input[type=text] {
    border: 1px solid #ccc;  
  }
  .main {
  overflow: hidden;
  background-color: #e9e9e9;
  padding: 6px;
  margin-top: 8px;
  font-size: 17px;
}
}

/* MAin Ansicht aber hier */
.main {
  overflow: hidden;
  background-color: #e9e9e9;
  padding: 6px;
  margin-top: 8px;
  font-size: 17px;
}

.qr-container {
  float: center;
  width: 80%;
}

.main button {
  float: left;
  padding: 6px 10px;
  margin-top: 8px;
  margin-right: 16px;
  background-color: #555;
  color: white;
  font-size: 17px;
  border: none;
  cursor: pointer;
}

.main button:hover {
  background-color: #2196F3;
}

/* Full-width input fields */
.main input[type=text], .main input[type=password] {
  width: 90%;
  padding: 5px;
  margin: 5px 5px 22px 10px;
  display: inline-block;
  border: none;
  background: #f1f1f1;
}

select {
  /* ... */
  width: 90%;
  height: 40px;
  -moz-padding-start: calc(10px - 3px);
  padding-left: 10px;
  background: #2196F3;
  color: #fff;
  font-family: 'Open Sans', sans-serif;
  font-size: 16px;
}

th, td {
  padding: 5px;
}

#artikel-table
{
     width: 200px;
    height: 400px;
    overflow:scroll;
}

.mainmenu {
  overflow: hidden;
  background-color: #e9e9e9;
  padding: 6px;
  margin-top: 8px;
  font-size: 17px;
}

.mainmenu .menu-container {
  float: left;
}

.mainmenu .content {
  float: right;
}


</style>