body {
    max-width: 1200px;
    color: #1A161A;
    background-color: #33A5CB;
}

header {
    box-shadow: 0 0 10px rgba(0, 0, 0, 0.5);
    padding: 5px 30px;
    z-index: 99;
    background: #fff;
    height: 60px;
    border-radius: 8px;
    display: flex;
    justify-content: space-between;
}

header img {    
    margin-top: 10px;
    height: 35px;
}

header nav {
    display: flex;
    margin-top: 10px;
}

header nav a {
    margin: 0;
    padding: 0.25em 10px;
    border: 0;
    float: left;
    width: 100%;
    color: #1A161A;
    font-size: 1.250em;
    text-decoration: none;
    background: transparent;
    font-weight: 300;
    position: relative;
    height: 30px;
}

header nav a:hover {
    color: #fff;
    transition: all 0.5s ease;
    background: #33A5CB;
    text-decoration: none;
}

details {
    background-color: white;
}

summary {
    background-color: white;
}

article {
    color: #1A161A;
    background-color: white;
    padding: 20px;
    margin-top: 20px;
    border-radius: 8px;
    box-shadow: 0 0 10px rgba(0, 0, 0, 0.5);
}

article p, article ul {
    padding-right: 30px;
}

article#kontakt {
    background-image: url('Release11logo_szare.svg');
    background-position: center;   /* Center the image */
    background-repeat: no-repeat;  /* Prevent tiling */
}

h1, h2, h3 {
    color: #1A161A;
}

h1 {
    padding-left: 20px;
}

h2 {
    padding-left: 20px;
}

div ul {
    padding-left: 50px;
    margin: 0;
}

footer div {
    display: flex;
    background-color: #fff;
    color: #464646;
    font-size: 0.750em;
}