body {
    background-color: rgb(38, 38, 38);
    padding: 0;
    margin: 0;
    font-family: "arial";
}

#Portfolio {
    max-width: 1800px;
    margin: 0 auto;
    padding: 37px 71px 72px 69px;
    /* první nula je nahoře a dole, auto je vpravo a vlevo */
}

img {
    width: 100%;
    max-width: 300px;
}

h1 {
    font-size: 200px;
    color: rgb(255, 255, 255);
    text-align: center;
    margin-top: 200px;
    margin-bottom: 0;
}

h2 {
    font-size: 60px;
    color: rgb(255, 255, 255);
}

h3 {
    font-size: 40px;
    color: rgb(255, 255, 255);
    margin: 0;
}

h4 {
    font-size: 60PX;
    color: rgb(255, 255, 255);
    text-align: center;
    margin-top: 0;
    margin-bottom: 0;
}

h5 {
    font-size: 15PX;
    color: rgb(255, 255, 255);
    text-align: center;
    margin-top: 15px;
}

p {
    font-size: 20px;
    color: rgb(255, 255, 255);
    padding: 0 0 2px 0;
    margin: 0;
    text-align: block;

}

#spacer {
    border-bottom: 2px solid white;
    margin: 2px 0 0 0;
}

#Menu {
    position: fixed;
}

ul {
    list-style-type: none;
    margin: 0;
    padding: 0;
    background-color: #333;
}

li {
    display: inline;
}

li a {
    display: inline-block;
    color: white;
    text-align: center;
    padding: 17px 21px;
    text-decoration: none;
    font-size: 21px;
    text-transform: uppercase;
}