* {box-sizing: border-box}
body {
    
    background-image: url(detka.jpg);
    background-repeat: no-repeat;
    background-size: cover;
    background-attachment: fixed;
    
}

.navbar {
    width: 100%;
    background-color: #555;
    overflow: auto;
}

.navbar a {
  float: left;
  padding: 12px;
  color: white;
  text-decoration: none;
  font-size: 17px;
  width: 33%;
  text-align: center;
}

.navbar a:hover {
    background-color: #000;
}

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

@media screen and (max-width: 500px) {
    .navbar a {
        float: none;
        display: block;
        width: 100%;
        text-align: left;
    }
}

h1 {
    text-align: center;
    margin: 35px;
    font-size: 60px;
    color: rgba(94, 95, 93, 10);
}
h2{
  text-align: center;
    margin: 35px;
    font-size: 60px;
    color: white
}
p{
  font-size: 25px;
}

#uvod {
    color: aliceblue;
    font-weight: 900;
    border-radius: 25px;
    background: rgba(94, 95, 93, 0.5);
    padding: 20px; 
    width: 800px; 
    margin: 50px auto;
    text-align: center;
    box-shadow: 0 4px 8px rgba(0, 0, 0, 0.1); 
}