body {
    margin: 0;
    padding-top: 50px;
    padding-bottom: 50px;
    background-color: var(--yellow);
    display: grid;
    grid-template-columns: 1fr 780px 1fr;
}

:root{
    --blue: #1F0FB5;
    --yellow: #E5BE3C;
    --beige: #F4ECD1;
    --white: #FFFFFF;
    --black: #2F2F2F;
}

#mentionslegales {
  grid-column: 2 / 3;
}

h1 {
    font-family: 'Raleway', sans-serif;
    font-weight: 900;
    color: var(--blue);
    font-size: 72px;
    text-transform: uppercase;
}

h3 {
    font-family: 'Raleway', sans-serif;
    font-weight: 900;
    color: var(--blue);
    font-size: 40px;
    margin-top: 50px;
}

p {
    font-family: 'Lato', sans-serif;
    font-weight: 400;
    color: var(--blue);
    font-size: 22px;
}

img {
  grid-column: 1;
  width: 300px;
  margin-left: calc((25vw - 300px) / 2);
}