app.css

html {
  box-sizing: border-box;
}
*, *:before, *:after {
  box-sizing: inherit;
}
html, body {
  height: 100%;
}

body {
  font-family:"geeza pro","arial";
  height: 100%;
  width: 100%;
}

header {
  background-color: #444;
  color:#f6f6f6;
  height:35px;
  font-family:"geeza pro","tahoma";
}

header h1 {font-size: 18px;font-weight: bold;line-height: 35px;padding:0 10px;font-family:"geeza pro","arial";}
#submit {position: absolute;top:8px;left:50%;}
#textarea {
  /*position: absolute;*/
  top:35px;
  bottom:0;
  right:0;
  border:0;
  padding:10px;
  display: block;
  font-size: 16px;
  font-weight: bold;
  line-height: 22px;
  overflow: auto;
  overflow-x: hidden;
  font-weight: bold;
  font-family: "geeza pro","arial";
}

#result {
  position: absolute;
  top:35px;
  bottom:0;
  left:0;
  padding:10px;
  display: block;
  font-size: 16px;
  font-weight: bold;
  line-height: 22px;
  background:#FFFFC1;
  border-right:1px solid #ccc;
  overflow: auto;
}

del {text-decoration: none; background-color: #fcc;white-space: pre;display: none;}
del.visible_del {display: inline;white-space: pre;}
#plain,#html {}
ins {background-color: #77EE76;}

#options {
  position: absolute;
  top:8px;
  right:50%;
}

#options p {display: inline;}
#options p.hidden {display: none;}
#options p.visible {display: inline !important;}
#links {
  position: absolute;
  top:8px;
  left:10px;
}

#links a {
  padding:3px 15px;
  background-color: #555;
  -moz-border-radius:    20px;
  -webkit-border-radius: 20px;
  border-radius:         20px;
  margin:0 5px 0 0;
  color:#f6f6f6;
}

#links a:hover {text-decoration: none;background-color: #888;}

#about, #bug {
  position: absolute;
  top:0; bottom:0;
  left:0;right:0;
  background-color: rgba(0,0,0,0.6);
  overflow: auto;
}

.box {
  width:580px;
  margin-bottom: 50px;
  border:5px solid #888;
  -moz-border-radius:    10px;
  -webkit-border-radius: 10px;
  border-radius:         10px;
  position: absolute;
  left:50%;
  margin-left: -300px;
  top:50px;
  -moz-box-shadow:    0px 0px 40px rgba(0,0,0,0.4);
  -webkit-box-shadow: 0px 0px 40px rgba(0,0,0,0.4);
  box-shadow:         0px 0px 40px rgba(0,0,0,0.4);
}

.box .content {
  background-color: #f6f6f6;
  padding:20px;
  -moz-border-radius:    5px;
  -webkit-border-radius: 5px;
  border-radius:         5px;
  position: relative;
}

.box .close {
  position: absolute;
  top:9px;
  left:12px;
  font-size: 24px;
  font-weight: bold;
  color:#888;
}

.box .ltr .close {
  right:12px;
  left:auto;
}

.box .close:hover {color:#444;text-decoration: none;}

.entry {float: right;padding-bottom: 15px;margin-left: 50px;}
.full_entry {padding-bottom: 15px;}
.short {}
.long {width: 540px;}
label.title {margin-left: 5px;}
label.help {color:#888;}

.box h2 {
  margin:-20px -20px 20px;
  border-bottom: 1px solid #aaa;
  padding: 10px;
}