extension.css

.banner {
    color: #555; 
    padding:10px
}
 
.banner_text {
    font-size:20px;
    color: white;
    font-weight: 400;
    text-align: center;
    font-family:"Helvetica",sans-serif;
}
 
.cta_link {
    float:right;
    vertical-align:middle;
    border:1px;
    background-color:white;
    padding:5px 20px;
    font-weight:600;
    font-size:16px;
    font-family:"Helvetica",sans-serif;
}