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

body
{
    text-align: center;
}

#logo
{
    position: absolute;
    margin: auto auto;
    width: 540px;
    top: 0px;
    left: calc(50% - 270px);
    transition: all 2s ease;
}

#arene
{
    position: absolute;
    margin: auto auto;
    top: 240px;
    left: calc(50% - 260px);
    width: 0px;
    height: 0px;
    box-sizing: content-box;
    background: url(bg01.jpg);
    overflow: hidden;
    border: 1px solid red;
    box-shadow: 5px 5px 15px #333333 inset;
    transition: all 2s ease;
    display: none;
}

#msg
{
    position: absolute;
    left: 15%;
    top: 35%;
    width: 50%;
    text-align: center;
    color: white;
    font-family: Arial, Helvetica, sans-serif;
    font-size: 128px;
    font-weight: bold;
    text-shadow: black 0px 5px 20px, black 0px 0px 5px;
    z-index: 1000;
    opacity: 0.5;
}

#vies 
{
    position: absolute;
    bottom: 0px;
    left: 0px;
    padding: 5px 10px;
    text-align: left;
    width: 30%;
    height: 30px;
    font-weight: bold;
    z-index: 1000;
}

#boutons
{
    position: absolute;
    top: 600px;
    text-align: center;
    width: 100%;
}

#boutons button
{
    position: relative;
    text-align: center;
    width: 100px;
    bottom: 0px;
    height: 30px;
}

.brique
{
    width: 36px;
    height: 16px;
    margin: 1px;
    border: 1px solid #999999;
    border-style: outset;
    box-shadow: 5px 5px 15px;
    position: absolute;
}

.b_
{
    border: 1px solid transparent;
    border-style: none;
    box-shadow: none;
    background: none;
}

.b0
{
    background: linear-gradient(135deg, #ffffff, #555555);
}

.b1
{
    background: linear-gradient(135deg, #ffff00, #555555);
}

.b2
{
    background: linear-gradient(135deg, #ff7700, #555555);
}

.b3
{
    background: linear-gradient(135deg, #ff0000, #555555);
}

.b4
{
    background: linear-gradient(135deg, #ff00ff, #555555);
}

.b5
{
    background: linear-gradient(135deg, #0000ff, #555555);
}

.b6
{
    background: linear-gradient(135deg, #00ffff, #555555);
}

.b7
{
    background: linear-gradient(135deg, #00ff00, #555555);
}

.b8 {background: linear-gradient(135deg, black, #555555);}

.b9 {background: linear-gradient(135deg, pink, #555555);}

.bA {background: linear-gradient(135deg, saddlebrown, #555555);}

.bB {background: linear-gradient(135deg, white, #555555);}

.balle
{
    position: absolute;
    width: 15px;
    height: 15px;
    border-radius: 50%;
    background: radial-gradient(at 4px 4px, #ffffff, #333333);
    box-shadow: 5px 5px 15px, 0px 0px 2px inset;
    /* transition: all 0.010 ease; */
}

.batte
{
    position: absolute;
    top: 460px;
    left: 220px;
    width: 80px;
    height: 20px;
    border-radius: 10px;
    background: lightgrey;                
    box-shadow: 5px 5px 15px, 0px -2px 8px inset, 0px 0px 1px inset;
    /* transition: all 3 ease; */
}