body {
    background-color: lightgray;
    color: black;
    font-family: sans-serif;
    margin: 0;
    padding: 0;
}


#prijava {
    background-color: yellow;
    padding: 15px;
    text-align: right;
    border-bottom: 2px solid black;
    font-weight: bold;
}


#content {
    background-color: white;
    width: 80%;
    margin: 20px auto;
    padding: 20px;
    border: 2px solid black;
}


h1, h2 {
    color: black;
    border-bottom: 1px solid black;
    padding-bottom: 10px;
}


a {
    color: blue;
    font-weight: bold;
}

a:hover {
    text-decoration: underline;
    color: darkblue;
}


table {
    width: 100%;
    border-collapse: collapse;
    margin-top: 15px;
}

th, td {
    border: 1px solid black;
    padding: 10px;
    text-align: left;
}

th {
    background-color: lightgray;
}

input, select, textarea {
    width: 100%;
    padding: 8px;
    margin: 5px 0 15px 0;
    border: 1px solid black;
    box-sizing: border-box;
}


input[type="submit"], input[type="reset"] {
    width: auto;
    background-color: green;
    color: white;
    padding: 10px 20px;
    border: none;
    cursor: pointer;
}

input[type="submit"]:hover {
    background-color: darkgreen;
}