div[class*="col"] {
  /*background: #fff;*/
  /*text-align: center;*/
  /*border: 1px; solid #ddd;*/
  /*padding: 5px;*/
  /*font-size: 12px;*/
}

.grid-resizable-demo .demo-col-center-content {
  display: flex;
  align-items: center;
  justify-content: center;
}

.grid-resizable-demo div[class*="col"] {
  margin-bottom: 0;
}

.grid-resizable-demo {
  --f7-grid-row-gap: 16px;
}