body {
    margin: 0;
    padding: 0;
}
canvas {
    margin: 0 auto;
}
.wrap-button {
    text-align: center;
    margin-top: 15px;
}
button {
    border: none;
    background: rgb(221, 3, 228);
    background: -moz-linear-gradient(135deg, rgba(221, 3, 228, 1) 0%, rgba(86, 17, 236, 1) 100%);
    background: -webkit-linear-gradient(135deg, rgba(221, 3, 228, 1) 0%, rgba(86, 17, 236, 1) 100%);
    background: linear-gradient(135deg, rgba(221, 3, 228, 1) 0%, rgba(86, 17, 236, 1) 100%);
    filter: progid:DXImageTransform.Microsoft.gradient(startColorstr="#dd03e4",endColorstr="#5611ec",GradientType=1);
    border-radius: 4px;
    width: 70px;
    height: 50px;
    color: white;
}
.wrap-top {
    margin-bottom: 4px;
}