@media (min-width: 768px) and (max-width: 979px) {
    .row-fluid.about-conference [class*="span"],
    .row-fluid.location-description [class*="span"]{
        float: none;
        width: 100%;
    }
}

@media (max-width: 767px) {
    .row-fluid .primary-button-container [class*="span"] {
        width: 50%;
        float: left;
    }

    .row-fluid .headshots [class*="span"] {
        width: 50%;
        float: left;
    }
}

@media (max-width: 480px) {
    .row-fluid .primary-button-container [class*="span"] {
        width: 100%;
        float: none;
    }

    .row-fluid .headshots [class*="span"] {
        width: 100%;
        float: none;
    }
}