h1
{
    text-align: center;
    color: rgb(255, 192, 241);
    font-size: 230%;
    text-decoration: underline;
}

body
{
    background-image: url(https://images.alphacoders.com/110/1101837.jpg);
    background-repeat: no-repeat;
    background-size: cover;
}

h3
{
    text-align: center;
    color: rgb(204, 195, 255);
}

img.batman5
{
    width: 21%;
    height: 21%;
    margin-bottom: 5%;
}

h2
{
    color: rgb(77, 228, 255);
    text-align: center;
    font-size: 205%;
}

div
{
    margin-left: 35%;
    margin-right: 35%;
}

.btn
{
    height: 100px;
    width: 100px;
    border-radius: 50%;
    display: flex;
    justify-content: center;
    align-items: center;
    position: fixed;
    right: 20px;
    bottom: 20px;
}

.icone
{
    width: 50px;
    cursor: pointer;
}