*{
    margin: 0;
    padding: 0;
    border: none;
}

div {
    font-size: 20px;
    margin: 20px;
    margin-top: 20px;
    margin-bottom: 20px;
    text-align: center;
}

header{
    font-size: 30px;
    text-align: left;
    border-radius: 30px;
    
}

header li {
    display: inline;
}

header  a{
    color: white;
    font-size: 30px;
    text-decoration: none;
    padding: 10px;
}


header ul {
    text-align: center;
    padding-top: 15px;
}

img {
    display: block;
    margin: auto;
    height: auto;
    width: auto;
    margin-bottom: 20px;
    margin-top: 20px;
}

p {
    line-height: 28px;
    margin-bottom: 40px;
    max-width: 800px;
    align-items: left;
    text-align: center;
    margin: auto;
}

.container {
    color: white;
}

h1 {
    margin-bottom: 20px;
    color: rgb(24, 177, 0);
    font-size: 50px;
}

h2 {
    font-size: 30px;
    margin-bottom: 20px;
}

body {
    background-color: black;
}

.pré h2 {
    color: greenyellow;
}

.pré h3 {
    color: greenyellow;
}

.hard h2 {
    color: red;
}

.hard h3 {
    color: red;
}

.extra h2 {
    color: gold;
}

.extra h3 {
    color: gold;
}