body{background-color:#ffefea;font-family:arial,sans-serif;}
p{margin-left:0.5em;margin-right:0.5em;text-align:justify;}
ol{margin-left:1.5cm;}
ul{margin-left:1.5cm;}
.answer{background-color:#e5e5ff;
 padding:0.5em;border-style:groove;border-width:thin;width:98%}
.blue{color:blue;}
.red{color:red;}
.green{color:green;}
.question{background-color:#e5e5ff;padding:0.5em;border-style:groove;
 border-width:thin;width:98%}
.answer h3{color:blue;}
.lesson h1{color:brown;text-align:center}
.question h3{color:blue;}
pre{margin-left:1cm;font-family:courier-new,monospace;font-size:90%}
pre.code{margin-left:1cm;font-family:courier-new,monospace;font-size:90%;}
pre.program{width:auto;margin-left:1cm;margin-right:1cm;padding:0.5cm;
 border-style:double;border-color:brown;background-color:white;
 font-family:courier-new,monospace;font-size:90%;}
code{font-family:courier-new;font-size:110%}
table{margin-left:0.5cm;font-family:arial,sans-serif;font-size:90%;}
table pre{margin-left:0.4cm;margin-right:0.4cm;}
a:link     { color:blue }
a:visited  { color:brown }
a:active   { color:red }
a:hover    { color:red }