How to insert this code to widget title ?

Pls help me, i don’t understand about before, after …
I have a nice code to make widget better. I don’t want to add to style.css.

Thanks so much

.sidebar .widget-title:before {
    border-bottom: 15px solid #005D87;
    border-left: 20px solid rgba(0, 0, 0, 0);
    content: "";
    display: block;
    height: 0;
    left: 0;
    position: absolute;
    top: -15px;
    width: 0;
    z-index: 0;
}

.sidebar .widget-title:after {
    border-bottom: 15px solid #005D87;
    border-right: 20px solid rgba(0, 0, 0, 0);
    content: "";
    display: block;
    height: 0;
    position: absolute;
    right: 0;
    top: -15px;
    width: 0;
    z-index: 0;
}

.sidebar .widget-title {
    background: none repeat scroll 0 0 #0074A2;
    box-shadow: 0 1px 2px rgba(0, 0, 0, 0.3);
    color: #FFFFFF;
    display: inline-block;
    font-size: 1.25em;
    line-height: 2.5em;
    margin: 0 0 0 -3.05em;
    min-height: 50px;
    position: relative;
    width: 400px;
    z-index: 10;
    margin-top: -25px;
    font-weight: bold;
    text-align: center;
}

[Moderator note: code fixed. Please wrap code in the backtick character or use the code button.]

• This topic was modified 9 years, 3 months ago by bdbrown.
• This topic was modified 9 years, 3 months ago by bdbrown.