html, body {
    height: 100%;
    margin: 0;
}

body {
    color: yellow;
    font-family: 'Raleway', sans-serif;
    background-image:
            linear-gradient(to bottom, rgba(245, 246, 252, 0.12), rgba(70, 149, 151, 0.73)),
            url('../images/background.jpg');
    background-repeat: no-repeat;
    background-size: cover;
}

header {
    border: solid 2pt #2e888888;
    border-radius: 30pt;
    background-image: linear-gradient(35deg, #469597 0%, #BBC6C8 80%, #DDBEAA 100%);
    padding: 0 2%;
    width: 50%;
    border-top-color: #2f6688dd;
}

header h1 {
    letter-spacing: 10px;
    font-variant-caps: all-small-caps;
    font-size: 36px;
    text-align: center;
}

nav ul li {
    display: flex;
    flex-direction: column;
    margin: 10px 0;
    border: solid 2px grey;
    padding: 10% 0 10% 10px;
}

nav ul {
    padding: 0;
    margin: auto;
}

nav {
    margin: 2%;
}

nav ul li:hover {
    background-color: #469597D6;
}

nav a:active, nav a:link, nav a:visited {
    text-decoration: none;
    color: white;
    font-size: 18px;
    font-weight: bold;
    font-variant-caps: all-petite-caps;
}

nav a:hover {
    text-decoration: underline;
}

main {
    display: flex;
    flex-direction: row;
    justify-content: flex-start;
    margin: 2% auto;
    //position: relative;
    //min-height: 100%;
}

article {
    margin: 1%;
}

section.navigation {
    width: 200px;
    padding: 10px;
    height: auto;
    align-items: center;
}

section {
    width: auto;
    min-width: 80%;
    margin: 1%;
}

article.tood {
    display: flex;
    flex-direction: row;
    justify-content: flex-start;
}

#osa-1, #osa-2, #osa-3 {
    width: 30%;
    margin: 1%;
    padding: 0 1%;
    background-color: darkgray;
}

footer {
    width: 100%;
    height: 80px;

    position:absolute;
    bottom:0;

    background-color: #646464;
    padding-top: 20px;
    text-align: center;
}