:root {
    --my_blue: #003682;
    --header_footer_space: 3.5rem;
}

a,
h1,
h2,
h3,
h4,
h5,
p {
    font-family: "Open Sans", Helvetica, Arial, sans-serif;
}

header,
footer {
    background: var(--my_blue);
}

header {
    min-height: 2rem;
    font-size: 13px;
}

.cover-container {
    position: relative;
    min-height: 100vh;
}

main {
    padding-bottom: var(--header_footer_space);
}

footer {
    position: absolute;
    bottom: 0;
    height: var(--header_footer_space);
    color: white;
    width: 100%;
    padding: 20px 0 10px;
    font-size: 12px;
}

footer a:hover,
footer a {
    color: white;
}

footer a:hover {
    font-weight: bold;
}

.hidden {
    display: none;
    visibility: hidden;
    animation: 4s fadeOut;
}

.show {
    display: block;
    visibility: visible;
    animation: 4s fadeIn;
}

.contacts,
.presentation {
    margin-top: 3.5%;
}

.contacts {
    text-align: left;
}

.fa {
    margin-right: 5px;
}

.btn-primary {
    background: var(--my_blue);
    border-color: var(--my_blue);
}

.btn-primary:hover {
    background: white;
    color: var(--my_blue);
    border-color: var(--my_blue);
    font-weight: bold;
}

#image-1,
#image-2,
#image-3 {
    min-height: 250px;
    margin-bottom: 15px;
    background-position: center !important;
    background-repeat: no-repeat !important;
    background-size: contain !important;
}

#image-3 {
    background-size: 97% !important;
}

@media screen and (max-width: 760px) {
    footer {
        position: relative;
    }
    #image-1,
    #image-2,
    #image-3 {
        background-size: cover !important;
        background-position: top !important;
    }
}