@charset "utf-8";
/* CSS Document */

* { margin: 0; padding: 0; }
html { font: 12px/1.3 Geneva, Arial, Helvetica, sans-serif; }
html > body { margin: 1em auto; }
html > body > div + div { margin-top: 1em; }

h1, h2, h3, h4 { margin: 0.3em 0 }
h1 { font-size: 1.75em; text-align: center }
h2 { font-size: 1.2em; border-bottom: 1px solid #000;}
h3, h4 { font-size: 1em }

ul.bullets li {list-style-type: square; margin-left: 2em;}

input {margin: 0.5em;}

#lectures {margin: 0 auto; width: 130px; margin-bottom: 1em;}
#box {text-align: center; margin-top: 5em; text-transform: lowercase;}
#include {text-align: center;}
#footer {text-align: center; margin: 0 auto;}

.error {color: #f00;}

.correct {color: green;}
.incorrect {color: red;}