:root {
  --bs-font-sans-serif: Montserrat;
  --bs-border-width: 2px;
  --bs-border-color: #287ea9;
  --bs-link-hover-color: #309acf;
  --bs-body-line-height: 1.8;
  --bs-body-font-size: 1.1rem;
}

.header {
    border-top: 5px solid #287ea9;
    border-bottom: 1px solid #eee;
}

a {
    color: #287ea9;
    text-decoration: none;
}

.social-icon > a {
    padding: 0.7em;
}

.footer {
    border-top: 1px solid #eee;
}

/* main content */

.card {
    margin-bottom: 10px;
    position: relative;
}

/*.card:hover .card-title {
    opacity: 1;
}*/

.card-title {
    opacity: 1;
    background-color: rgba(0, 0, 0, .2);
    pointer-events: none;
    position: absolute;
    top: 0;
    color: white;
    font-weight: 400;
    font-size: 1.5rem;
    line-height: 1.2em;
    padding: 40px;
    width: 100%;
    transition: opacity 0.5s;
    -webkit-transition: opacity 0.5s;
}

.card-img {
    width: 100%;
    border-radius: calc(.25rem - 1px);
    position: relative;
    display: -webkit-box;
    display: -ms-flexbox;
    display: flex;
    -webkit-box-orient: vertical;
    -webkit-box-direction: normal;
    -ms-flex-direction: column;
    flex-direction: column;
    min-width: 0;
    word-wrap: break-word;
    background-color: #fff;
    background-clip: border-box;
    border: 1px solid rgba(0, 0, 0, .125);
    border-radius: .25rem;
}