pass.css

@import url('https://fonts.googleapis.com/css?family=Roboto&display=swap');

body{
  font-family: 'Roboto', sans-serif;
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: hidden;
  margin: 0;
  background-color: #00529F;
}

.container{
    margin-top: 120px;
    background-color: #FFD520;
}

h2{
    text-align: center;
    color: #294e71;
}

.pass{
    background-color: #000090;
    padding: 20px;
    color: #fff;
}

td{
    padding: 5px 10px;
}

#length{
    width: 40px;
}

#upper{
    margin-left: 32px;
}

#lower{
    margin-left: 32px;
}

#num{
    margin-left: 32px;
}

#sym{
    margin-left: 32px;
}

#sub{
    width: 100%;
    margin: 10px 0px;
    padding: 10px;
    background-color: #00529F;
    font-weight: bold;
    cursor: pointer;
    border: none;
}