html {
    height: 100%;
}

body {
  font: 100% Verdana, Arial, Helvetica, sans-serif;
  margin:0;
  padding:0;
  height: 100%;
  position: relative;
}

#header {
  background-color:lightblue;
  width: 100%;
  height: 50px;
  position: fixed;
  top: 0;
}

#content {
  background-color: lightgreen;
  margin-left: 250px;
  -webkit-box-sizing: border-box;
  -moz-box-sizing: border-box;
  box-sizing: border-box;
  padding: 50px 10px;
  height: 100%;
  font-size: 110%;
}

#sidebar {
  float: left;
  width: 250px;  
  -webkit-box-sizing: border-box;
  -moz-box-sizing: border-box;
  box-sizing: border-box;
  background-color: yellow;
  padding: 50px 0px;
  height: 100%;
}

#footer {
  clear: both;
  width: 100%;
  height: 30px;
  background-color:lightblue;
  position: fixed;
  bottom: 0;
}

#header img.logo {
    height: 50px;
    margin: 0;
    padding: 0 20px 0 20px;
 
}

form.usernew label.useraddlabel { 
    display: inline-block;
    width: 25%;
}

form.usernew div.useraddformdiv {
    width: 100%;
}