.alert-info {
    font-weight: bolder !important;
    color: #FFF !important;
}

a.active > div > span {
    color: #FFF !important;
}

h1, .h1, h2, .h2, h3, .h3, h4, .h4, h5, .h5, h6, .h6 {
    margin-top: 0;
    margin-bottom: 0 !important;
}

.responsive-iframe {
    position: relative;
    overflow: hidden;
    padding-top: 56.25%; /* Proporção 16:9 */
}

.responsive-iframe iframe {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
}