.master {
    border: #e5e7eb solid 1px;
}

.top {
    border-top: #e5e7eb solid 1px;
}

.bottom {
    border-bottom: #e5e7eb solid 1px;
}

:is(.dark) .top {
    border-top: hsla(0,0%,100%,.2) solid 1px !important;
}

:is(.dark) .bottom {
    border-bottom: hsla(0,0%,100%,.2) solid 1px !important;
}

:is(.dark) .master {
    border: hsla(0,0%,100%,.2) solid 1px !important;
}

:is(.dark) canvas {
    background-color: white;
}

canvas {
    background-color: white;
}