mouseover button color

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Client likes how the "Learn More" buttons on home page below circle icons have a green mouseover effect.  

We duplicated this button for the Careers page and modified the css so is sits flush left.  We had to rename the button on the careers page from .entry-content a.more-link to .entry-content a.jobs-link.  Now the mouseover color change to green doesn't work.  I can't figure out how the original buttons on the home page are calling for a green mouseover since that stylization came with the theme.

Careers "Current Openings" button:

.entry-content a.jobs-link {
    background-color: #5a5853;
    border: 1px solid #ddd;
    color: #fff;
    clear: both;
    display: block;
    margin-top: 20px;
    margin-bottom: 26px;
    padding: 5px;
    text-align: center;
    text-decoration: none;
    border-radius: 8px;
    width: 130px;
}

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Home page "Learn More" button

.entry-content a.more-link {
    background-color: #5a5853;
    border: 1px solid #ddd;
    color: #fff;
    clear: both;
    display: block;
    margin: 20px auto 26px !important;
    padding: 5px;
    text-align: center;
    text-decoration: none;
    border-radius: 8px;
    width: 100px;
}

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