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

#canvas {
  border: 2px solid grey;
}
.toolsContainer {
  display: flex;
  align-items: center;
  justify-content: center;
  background-color: silver;
  height: 45px;
}
.toolsContainer > button {
  padding: 5px;
}
.toolsContainer > select,
button {
  margin: 0px 10px;
}