html {
    font-family: Arial, Helvetica, sans-serif;
}

header {
    background-color: rgb(39, 140, 180);
    padding: 2px;
    width: 100%;
    position : fixed;  
}

p {
    font-weight: bold;
}

img{
    position: static;
}

.centrer{
    text-align: center;
}