#title_info {
    text-align: center;
}

#footer {
    text-align: center;
    padding: 35px;
}

h2 {
    text-align: left;
}

h3 {
    text-align: left;
}

p {
    text-align: left;
}

li {
    text-align: left;
}

.container {
    width: 800px;
    margin: 0px auto;
}

.section {
    margin: 35px auto;
}

.centered {
    margin: 0px auto;
}

.prob {
    color: #FF0000;
}

.sol {
    color: #0000FF;
}

.past {
    color: #CCCCCC;
}

td {
    font-size: 32px;
    text-align: center;
}

code {
    color: #0000FF;
}

.cmd {
    color: #AA0078;
}

.example {
    margin: 0px auto;
    margin-left: 35px;
    padding-left: 35px;
    border-left: solid #AAAAAA;
}

.warning {
    margin: 0px auto;
    margin: 35px;
    padding: 35px;
    border: solid #FF0000;
    color: #FF0000;    
}