@import url('https://fonts.googleapis.com/css2?family=Protest+Guerrilla&display=swap');
@import url('https://fonts.googleapis.com/css2?family=Roboto&display=swap');

body {
    margin: 0px;
    padding-top: 40px;
}

header h1 {
    font-family: "Protest Guerrilla", sans-serif;
    font-weight: 400;
    font-size: 48px;
    text-align: center;
}

header a {
    text-decoration: none;
    color: white;
    background-color: black;
    font-size: 24px;
    display: flex;
    justify-content: center;
    font-family: "Roboto", sans-serif;
    font-weight: 400;
    border: 2px solid black;
    border-radius: 10px;
    padding: 5px;
}

#poprdenababovka {
    display: flex;
    justify-content: center;
}

.barva {
    color: red;
}

#tajemstvizakrivenelopaty {
    display: flex;
    flex-direction: column;
    align-items: center;
    font-family: "Roboto", sans-serif;
    padding: 20px;
    margin: 30px 16%;
    border: 2px solid black;
    border-radius: 20px;
}

div h2 {
    font-size: 30px;
}

div p {
    text-align: justify;
    font-size: 18px;
}

button {
    color: white;
    background-color: black;
    font-size: 24px;
    border: 2px solid black;
    border-radius: 10px;
    padding: 10px 25px;    
}

#semafor {
    height: 350px;
    width: 150px;
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    background-color: #000;
    justify-self: center;
}

.svetlo {
    display: flex;
    height: 100px;
    width: 100px;
    background-color: #666;
    border-radius: 50%;
    margin: 10px;
}