Changing the text-style

I’m not sure if this is the best or easiest way to do it, but I solved it. I went into my theme options and added this in my custom CSS:

code {
    background: none repeat scroll 0 0 white;
    color: #333333;
    font-size: 13px;
    line-height: 1.84615em;
    padding: 0 0 0 0;
    margin: 0 0 1.5em
    font-family: Arial,"Helvetica Neue",Helvetica,sans-serif;
    text-rendering: optimizelegibility;
    text-align:justify
}
ul, ol { padding: 0 0 0 0;
}
pre, code, kbd, samp, tt {
    font-family: Arial,"Helvetica Neue",Helvetica,sans-serif;
}