body {
    background-color: #0a0a1a;
    color: white;
    font-family: 'Arial', sans-serif;
    display: flex;
    flex-direction: column;
    align-items: center;
    padding: 20px;
}

h1{
    color: #4fc3f7;
    letter-spacing : 2px;
    margin : 40px
}

#trajectoire, #energies {
    background-color: #111122;
    border-left: 3px solid #4fc3f7;
    padding: 20px;
    margin: 30px 0;
}