/*CSS File For Sign-Up webpage*/
#body-color{
background-color:#6699CC;
}
#Sign-Up{
background-image:url('sign-up.png');
background-size:500px 500px;
background-repeat:no-repeat;
background-attachment:fixed;
background-position:center;
margin-top:150px;
margin-bottom:150px;
margin-right:150px;
margin-left:450px;
padding:9px 35px; 
}
#button{
border-radius:10px;
width:100px;
height:40px;
background:#FF00FF;
font-weight:bold;
font-size:20px;
}


Read more: http://mrbool.com/how-to-create-a-sign-up-form-registration-with-php-and-mysql/28675#ixzz6px5Q2XNX