body {
    text-align: center;
}

h1 {
    font-family: Rockwell, Georgia, sans-serif;
    text-transform: uppercase;
    display: inline-block;
    background: #FF5252;
    padding: 0 .5em;
    max-width: 60%;
    position: relative;
    box-sizing: border-box;
    font-size: 2em;
    color: #ffffff;
    margin-top: 4vh;
    letter-spacing: .1em;
}

@media all and (min-width:600px) {
    h1 {
        font-size: 3vw;
    }
}

.aide {
    font-size: 1vw;
}

.logo {
    height: 6vw;
    margin: 10px;
}

.bouton {
    height: 4vw;
    margin: 4vw;
}

.imageFleche {
    height: 5vw;
    margin: 2px;
}

footer {
    color: #cf3030;
    font-family: 'Segoe UI', Helvetica, Arial, sans-serif;
    left: 0;
    text-align: center;
    font-size: 12px;
}