#canvas1 {
    background-color: White;
    width: 350px;
    height: 350px;
}


.btn {

	width: 200px;
    height: 40px;
	font-weight: bold;
    margin: auto;
    text-align: center;

}

#centrage {

height: 600px;
width: 500px;
border: groove;
margin: auto;
padding: 10px;

}

#centragep {

height: 700px;
width: 500px;
border: groove;
margin: auto;
padding: 10px;

}


.tableaux{
    margin: auto;
}

.images {
	width: 100%;
     margin: auto;
     border: 1px solid;
}

h4
{text-decoration: underline;}

.fraction {
    display: inline-block;
    vertical-align: middle; 
    margin: 0 0.2em 0.4ex;
    text-align: center;
}
.fraction > span {
    display: block;
    padding-top: 0.15em;
}
.fraction span.fdn {border-top: thin solid black;}
.fraction span.bar {display: none;}