*{
margin: 0px;
padding: 0px;
}
body{
background: orange;
}
#left{
position: absolute;
top: 0%;
left: 0%;
width: 50%;
height: 100%;
background: #08C;

}
#login{
display: none;
position: absolute;
left: 50%;
top: 50%;
margin-top: -200px;
margin-left: -200px;
width: 400px;
text-align: center;
background: white;
border: solid;
}
#login form{
padding: 20px;
}
#login form p{
margin: 10px;
}
#login form h2{
font-family: arial;
font-size: 24px;
}
#login form input{
font-size: 24px;
text-align: center;
}
#err{
color: red;
}