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

body {
    margin: 0;
    padding: 0;
}

 .btnUndo , .btnDelete{
    width: 100%;
    font-size: 2em;
}
 .btnUndo {
     background-color: green;
}
 .btnDelete{

    background-color: red;
}

input, .btnUndo, .btnDelete, select{
    width: 100%;
    font-size: 2em;
}

table {
    border: 1px;
    border-collapse: collapse;
}

td,th {
    border: 1px solid black;
}

canvas {
    border: solid 2px black;
}

.canvasInterface{
    width: 21%;
}