.columns {
  display: flex;
  flex-direction: row;
  margin-right: 20px;
}

label {
  box-sizing: border-box;
  display: block;
  padding: 2px;
}

button {
  display: inline-block;
  margin: 5px;
  font-weight: bold;
}

.page-wrapper {
  height: 100%;
  display: flex;
  flex-direction: column;
}

.grid-wrapper {
  flex: 1 1 0px;
}
.example-error {
  box-sizing: border-box;
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 30px;
  background-color: #dc3a3a;
  color: white;
  transition: top 0.2s;
  white-space: nowrap;
  overflow: hidden;
  padding: 5px;
}

.example-error.inactive {
  top: -30px;
}