@import url('https://fonts.googleapis.com/css2?family=Montserrat:wght@300;400;700&display=swap');

* {
    font-family: 'Montserrat', sans-serif;
}

h1 {
    font-weight: 700;
    color: #003E51;
    text-transform: uppercase;
    font-size: 1.25em;
}

h2{
    text-transform: uppercase;
}

h3 {
    margin-top: 50px;
}

h4 {
    margin-bottom: 0;
}

article h3 {
    margin-top: 1em;
}

p, ul {
    font-size: 0.95em;
    line-height: 1.5em;
}

#up-arrow {
    cursor: pointer;
    position: fixed;
    bottom: 5px;
    right: 5px;
    padding: 3px 10px 3px 10px;
    background-color: white;
    font-size: 3em;
    border-radius: 5px;
    color: grey;
    z-index: 100;
    opacity: 0.5;
    text-decoration: none;
}

#up-arrow:visited {
    color: grey;
}

body {
    margin: auto;
    width: 75%;
/*    border: 5px solid black;
    background-image: url("../images/background.jpg");
    background-repeat: no-repeat;
    background-size: cover;
    background-attachment: fixed;*/
    background-color: rgba(108, 194, 74, 0.1);
    max-width: 1900px;
}

header {
    /*background-color: rgba(214, 214, 214, 0.8);*/
    text-align: center;
    padding: 20px;
}

header img {
    width: 224.400px;
    height: 120.575px;
}

nav {
    overflow: hidden;
    background-color: #6CC24A;
    width: 100%;
    position: sticky;
    top: 0;
    z-index: 10;
}

nav a {
    float: left;
    display: block;
    color: aliceblue;
    text-align: center;
    padding-top: 15px;
    padding-bottom: 15px;
    text-decoration: none;
    width: 25%;
    text-transform: uppercase;
}

nav a:hover {
    /*background-color: rgb(19, 104, 19);*/
    color: #003E51;
}

nav a.active {
    background-color: #c2e6b4;
    color: #003E51;
}

section {
    /*background-color: antiquewhite;*/
    padding: 15px;
}

.fil {
    background-color: rgba(108, 194, 74, 0.35);
    padding: 15px;
    font-size: 0.75em;
}

.fil a {
    text-decoration: none;
    color: #003E51;
}

.column {
    float: left;
    width: 50%;
    padding: 2%;
}

.row::after {
    content: "";
    display: table;
    clear: both;
}

@media screen and (max-width: 960px) {
    body {
        width: 100%;
        border: none;
    }

    #up-arrow {
        opacity: 0.3;
    }
}

@media screen and (max-width: 600px) {
    body {
        background-image: none;
    }

    header {
        background-color: rgb(214, 214, 214);
    }

    nav {
        position: static;
    }

    nav a {
        width: 100%;
        padding-top: 10px;
        padding-bottom: 10px;
    }

    .column {
        width: 100%;
    }
}

.cer-group-pictures {
    height: 100%;
    width: 100%;
}

footer {
    background-color: #003E51;
    text-align: center;
    padding: 5px;
    color: #fff;
    font-size: 0.5em;
}