* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

/* Déclaration des variables */
html {
    --var-bg-color: #7743e9;
    --var-secondary-color: #6e51cf;
    --var-text-color: #fff;
    --var-text-color-dark: #333;
    --var-bg-light: #f0f4ff;
    --var-bg-dark: #d3c9f3;
}

body {
    background-color: var(--var-bg-light);
    color: var(--var-text-color-dark);
}

header {
    height: 10rem;
    background-color: white;
    padding: 0 2rem;
    text-align: center;
    display: flex;
    justify-content: space-between;
    align-items: center;
    box-shadow: 0 0 10px rgba(0, 0, 0, 0.1);
    position: sticky;
    top: 0;
    width: 100%;
    z-index: 1000;
}

body header a {
    font-size: 2rem;
    font-weight: 900;
}


body form {
    margin-left: 1rem;
    margin-right: 1rem;
    display: flex;
    flex-direction: column;
}

body form label {
    margin-top: 2rem;
    font-size: 1rem;
    font-weight: 900;
}

body form input {
    margin-top: 1px;
    margin-left: 3rem;
    margin-right: 3rem;
    font-size: 1rem;
    font-weight: 500;
}

#pseudo {
    background: rgb(224, 233, 241);
}

#objet {
    background: rgb(224, 233, 241);
}
#btn01 {
    height: 5rem;
    border-radius: 10px;
    margin-top: 2rem;
    margin-left: 5rem;
    margin-right: 5rem;
    font-size: 2rem;
    font-weight: 500;
    background: rgb(161, 241, 170);
}

body form textarea {
    margin-top: 1px;
    margin-left: 3rem;
    margin-right: 3rem;
    font-size: 1rem;
    background: rgb(224, 233, 241);
}
  
/* Mise en forme footer */

footer {
    width: 100%;
    height: 100px;
    background-color: #ccb6fa;
    margin-top: 10rem;
    display: flex;
    justify-content: center;
    align-items: center;
    color: var(--var-text-color-dark);
}