Content boxes not showing

Hi Wes,

Just recently purchased the guru theme and tried adding content boxes to my pages but nothing is showing up? Is something overriding the code I inserted on style.css? What I have inserted,

/* Content Boxes
------------------------------------------------------------ */
 
.content-box-blue,
.content-box-gray,
.content-box-green,
.content-box-purple,
.content-box-red,
.content-box-yellow {
    margin: 0 0 25px;
    overflow: hidden;
    padding: 20px;
}
 
.content-box-blue {
    background-color: #d8ecf7;
    border: 1px solid #afcde3;
}
 
.content-box-gray {
    background-color: #e2e2e2;
    border: 1px solid #bdbdbd;
}
 
.content-box-green {
    background-color: #d9edc2;
    border: 1px solid #b2ce96;
}
 
.content-box-purple {
    background-color: #e2e2f9;
    border: 1px solid #bebde9;
}
 
.content-box-red {
    background-color: #f9dbdb;
    border: 1px solid #e9b3b3;
}
 
.content-box-yellow {
    background-color: #fef5c4;
    border: 1px solid #fadf98;
}

On page

<div class="content-box-blue">Enter content box text here.</div>

Would appreciate any tips or advice you could give me.

Pete