body {
    margin: 0;
    padding: 0;
    overflow: hidden;
    background-size: cover;
    background-position: center;
    transition: background-image 0.3s;
}

.head {
    background: rgba(255, 255, 255, 0.6);
}

.nadpis {
    color: #000000;
    font-size: 50px;
    font-family: "Lucida Handwriting", "Courier New", monospace;
    text-align: center;
    margin-bottom: -30px;
}

.h2 {
    color: #000000;
    font-family:verdana;
    text-align: center;
}

.button {
    width: 200px;
    font-size: 30px;
    font-style: italic;
    border-radius: 5px;
    background-color: rgba(177, 174, 174, 0.8);
    padding: 10px;
    margin-top: -100px;
    margin-left: 30px;
    margin-right: 30px;
    margin-bottom: 30px;
    cursor: pointer;
    transition-duration: 1.3s; 
    box-shadow: 0 8px 16px 0 rgba(0,0,0,0.4), 0 6px 20px 0 rgba(0,0,0,0.19);
}
.button:hover {
    background-color: #f5f4f4;
    color: rgb(158, 156, 156);
    }

.button:active {
    background-color: #000000;
    box-shadow: 0 10px #666;
    transform: translateY(15px);
    }

a.a:visited {
    color: black;
}
a.a:link {
    color: black;
    text-decoration: none;
}
a.a:hover {
    color: black;
}
a.a:active {
    color: black;
}

.obrazky {
    display:flex ;
}

.obrazky {
    background: rgba(255, 255, 255, 0.3)
}

.obrazky div{
    flex: 1;
    margin: 20px;
}

.call {
    background: rgba(255, 255, 255, 0.4);
    padding: 3px;
    color: #000000;
    font-family:verdana;
    text-align: center;
    font-size: 50px;
    padding: 10px;
}


/* https://www.freepik.com/free-photos-vectors/black-pattern

/*<div class="obrazky">
    <div class="img1">
        <a href="fotogalerie.html"><img src="2.jpg" height="200"></a>
    </div>
    <div class="img2">
        <a href="fotogalerie.html"><img src="3.jpg" height="200"></a>
    </div>
    <div class="img3">
        <a href="fotogalerie.html"><img src="4.jpg" height="200"></a>
    </div>
    <div class="img3">
        <a href="fotogalerie.html"><img src="5.jpg" height="200"></a>
    </div>
    <div class="img3">
        <a href="fotogalerie.html"><img src="6.jpg" height="200"></a>
    </div>