*{
    border: 0;
    margin: 0;
    box-sizing: border-box;
    font-family: Arial, Helvetica, sans-serif;
}

#code *{
    font-family: Consolas, 'Courier New', Courier, monospace;
    font-size: 30px;
    transition: 0.3s;
}

#code{
    margin: 50px 20px;
}

#code h2{
    font-family: Arial, Helvetica, sans-serif;
    margin-bottom: 30px;
}

.green{
    color: green;
}

.yellow{
    color:gold;
}

.highlight{
    background-color: red;
    border-radius: 3px;
}

.watcher{
    cursor: pointer;
    border: 1px solid transparent;
    border-radius: 3px;
    display: inline-block;
    padding: 3px;
    transition: .3s;
}

.watching{
    border: 1px solid red;
}

.one_indent{
    padding-left: 40px;
}

#instructions{
    margin: 20px 20px 50px 20px;
}

.two_blank_lines{
    margin-bottom: 45px;
}