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

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

body
{
    background-color: rgb(210, 210, 210);
}

img.fail
{
    margin-top: -155px;
    display: block;
    margin-right: auto;
    margin-left: auto;
    width: 50%;

}

a.non
{
    font-size: 35px;
    color: #58118f;
    border: solid #58118f;
    border-radius: 20%;
    box-shadow: 10px 5px 5px rgb(144, 83, 201);
    padding-left: 100px;
    padding-right: 100px;
    padding-bottom: 10px;
    padding-top: 10px;
    background-color: #c7c7c7;
    margin-left: 20%;
}

*
{
    margin-top: 20px;
}