body {
    margin: 0;
    padding: 0;
    background: url(images/tiledbackground4.png) no-repeat center fixed;
    -webkit-background-size: cover;
    -moz-background-size: cover;
    -o-background-size: cover;
    background-size: cover;
}

.nonreaction {
    color: black;
}

.reaction {
    color: red;
}

.burette {
    position: absolute;
    width: 21.96%;
    height: 77.9%;
    left: 40%;
    top: 10%;

}

.erlen {
    position: absolute;
    width: 6%;
    height: 15.5%;
    left: 53%;
    top: 69%;
}

.liquide {
    /*position: absolute;
    /*width:15px;
    /*height:220px;
    left: 55.5%;
    /*top: 14%;*/
}

.valider {
    position: absolute;
    left: 94.25%;
    top: 65%;
    font-size: 1vw;
}

.recommencer {
    position: absolute;
    left: 83%;
    top: 70%;
    font-size: 1vw;
}

.reponse {
    position: absolute;
    left: 81.5%;
    top: 65%;
    font-size: 1vw;
}

.ecritureardoise {
    position: absolute;
    font-family: "Georgia";
    color: Maroon;
    font-size: 2vw;
}

.ecritureardoisenoire {
    position: absolute;
    font-family: "Georgia";
    color: white;
    font-size: 2vw;
}

.repv {
    position: absolute;
    font-size: 1vw;
    left: 85.6%;
}

.repblock {
    position: absolute;
    font-size: 1vw;
    left: 85.6%;
    background-color: grey;
}

.unite {
    position: absolute;
    font-size: 1vw;
    right: 2%;
    font-family: "Georgia";
    color: white;
}