div.login { 
  text-align: left;
  position:absolute;
  top: 40%;
  left: 50%;
  margin-top: -100px;
  margin-left: -150px;
} 

div.login_background { 
  position:absolute;
  width: 100%;
  height: 100%;
  top: 40%;
  background-color: black;
} 

div#pass {
  text-align: left;
  font-weight:bold;
  padding-left:2px;
}

input#Password {
  -webkit-text-security: disc;
}

body {
  margin:1cm;
  font-size: 12px;
}

.shiny-output-error {
  visibility: hidden;
}









