body{
        background-color: #ffff99;
}
strong{
    font-size: 16px;
}
        h1 {
            color: red;
            text-align: center;
            font-family: Arial, Helvetica, sans-serif;
        }

        .green {
            color: green;
        }

        .blue {
            color: blue;
        }

        .yellow {
            color: yellow;
        }

        .yellowbackround {
            background-color: yellow;
        }

        img {
            display: block;
            margin: auto;
            width: 300px;
            border: 2px;
            border-color: black;
            border-style: solid;
        }

        .center {
            display: flex;
            justify-content: center;

        }

        .width {
            width: 50%;
            text-align: left;
            margin-left: 0;
        }
        .bg_green{
            background-color: green;
        }
        .spec{
            background-color: red;
            font-size: 16px;
            font-weight: bold;
        }
        .kod{
            font-family: 'Courier New', Courier, monospace;
        }
        a {
color:#666666;
font-size:16px;
text-decoration:none;
}
a:hover {
text-decoration:underline overline;
}