body {
    overflow: hidden;
}

.okvir {
    top: 6vh;
    bottom: 6vh;
    background-color: yellow;
    border: 1vw dotted skyblue;
    /* border-style: none|hidden|dotted|dashed|solid|double|groove|ridge|inset|outset|initial|inherit;
style 
    border: solid;

width | style 
    border: 2px dotted;

style | color 
    border: outset #f33;

width | style | color 
    border: medium dashed green;

Global values 
    border: inherit;
    border: initial;
    border: unset; */
    padding: 1vw;
}

.ozadje {
    position: relative;
    border: 0.5rem outset pink;
    outline: 0.5rem solid khaki;
    box-shadow: 0 0 0 2rem skyblue;
    font: bold 1rem sans-serif;
    outline-offset: 0.5rem;
    border-radius: 12%;
    -webkit-border-radius: 12%;
    -moz-border-radius: 12%;
    -ms-border-radius: 12%;
    -o-border-radius: 12%;
}

header {
    position: fixed;
    top: 5vh;

    
    background-color: palevioletred;
}

nav {
    position: relative;
    top: 10vh;
    height: 50vh;
    background-color: palevioletred;
}

footer {
    position: fixed;
    bottom: 6vh;
    background-color: palevioletred;
}