body {
    box-sizing: border-box;
    font-family: Helvetica;
}
.index-logo {
    display: block;
    margin-left: auto;
    margin-right: auto;
    max-width: 980px;
    //clip-path: inset(10px 20px 30px 40px);
}
.index-text {
    max-width: 550px;
    margin-top: 20px;
    margin-left: auto;
    margin-right: auto;
    margin-bottom: 20px;
    border-radius: 10px 10px 10px 10px;
    padding: 15px;
    background-color: rgb(235,235,235);
    box-shadow: 0 2px 6px rgb(100 100 100 / 30%);
    font-size: 18px;
}

.obrazek {
    width: 400px;
    padding: 5px;
}
.kola-text {
    max-width: 900px;
    margin-top: 20px;
    margin-left: auto;
    margin-right: auto;
    margin-bottom: 20px;
    border-radius: 10px 10px 10px 10px;
    padding: 15px;
    background-color: rgb(235,235,235);
    box-shadow: 0 2px 6px rgb(100 100 100 / 30%);
    font-size: 18px;
    text-align: center;
}
.kola-nadpis {
    font-size: 25px;
    text-align: center;
    margin-bottom: 50px;
}
.kola-nadpis2 {
    font-size: 25px;
    text-align: center;
    margin-bottom: 15px;
}
.kola-button {
    background-color: #04AA6D; /* Green */
    border: none;
    color: white;
    padding: 15px 32px;
    text-align: center;
    text-decoration: none;
    display: inline-block;
    font-size: 16px;
    margin-top: 25px;
}

ul {
    list-style-type: none;
    margin: 0 auto;
    padding: 0;
    overflow: hidden;
    background-color: #333;
    max-width: 980px;
}

li {
    float: left;
}

li a {
    display: block;
    color: white;
    text-align: center;
    padding: 14px 16px;
    text-decoration: none;
}

li a:hover:not(.active) {
    background-color: #111;
}

.active {
    background-color: #04AA6D;
}