body{background-image: url(zaverecne_obrazky/pozadie2.png);
    background-size: 100%;
    text-align: center;
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    font-size: 2em}

header{background: rgba(240, 248, 255, 0.5);
        position: absolute;
        top: 2%;
        left: 4%;
        height: 8%;
        width: 91%;
        text-align: center;
        font-size: 2.1em;
        border: 2px solid rgb(0, 0, 0);
        }

nav{background: rgba(240, 248, 255, 0);
    position: absolute;
    top: 12%;
    left: 4%;
    height: 82%;
    width: 14%;}


.tlacidlo{background-color: blue;
        width: 60%;
        display: block;
        margin: 20px;
        padding: 10px;
        border-radius: 10px;
        border: 4px;
        text-align: center;
        color: rgb(255, 255, 255);
        text-decoration: none;}

a.tlacidlo:hover {background-color: rgb(0, 122, 122);}


main{background-color: rgba(240, 248, 255, 0);
    top: 12%;
    left: 20%;
    width: 75%;
    height: 82%;
    position: absolute;
    overflow: auto;
    color: black;
    text-align: justify;}

footer{background-color: rgba(240, 248, 255, 0);
        top: 95% ;
        left: 4%;
        width: 91%;
        height: 4%;
        position: absolute;}

p{margin: 21px;}

.obrinf{max-width: 35%;
        margin: 21px;
        float: right;
        border-radius: 10px;}
.obrstud{max-width: 30%;
        margin: 21px;
        float: left;
        border: solid 2px black}
.obrvc{max-width: 80%;
        margin: 21px;}

.flag{max-width: 50px;}