button {
    background:green;
    color:blanchedalmond;
    width:120px;
    border-radius: 10px;
    line-height: 2em;
    border: none;
    font-family: Arial, sans-serif;
    font-size: 16px;
}

.tim {
    margin: auto;
    width: 800px;
    padding: 5px 0;
    text-align: center;
    font-size: 32px;
    font-family: digital;
    margin-bottom: 10px;
    font-weight: bold;
}

.chronometre {
    margin: auto;
    width: 800px;
    text-align: center;
}

#intro {
    font-family: Arial, sans-serif;
    font-size: 16px;
    text-align: center;
}

header {
    font-family: Arial, sans-serif;
    font-size: 32px;
    text-align: center;
    font-weight: bold;
}

#affichageMessage {
    font-family: Arial, sans-serif;
    font-size: 24px;
}

#titre {
    font-family: Arial, sans-serif;
    font-size: 82px;
}

#donnees {
    display: inline-block;
    font-family: Arial, sans-serif;
    font-size: 18px;
    background:lightblue;
    width: 300px;
}

input {
    font-family: Arial, sans-serif;
    font-size: 18px;
    width:50px;
}

#resultats {
    display: inline-block;
    font-family: Arial, sans-serif;
    font-size: 18px;
    background:lightgreen;
    width: 380px;
}

output {
    font-family: Arial, sans-serif;
    font-size: 18px;
    width:50px;
}

canvas {
    margin-left: auto;
    margin-right: auto;
    display: block;
}