demo-container { display: block; border: 2px solid rgb(189, 189, 189); padding: 25px 10px 10px; border-radius: 4px; width: 300px; box-sizing: border-box; }
demo-object { display: grid; gap: 10px; grid-template-columns: auto auto auto auto; background-color: rgb(33, 150, 243); padding: 10px; }
block-block { background-color: rgba(255, 255, 255, 0.8); text-align: center; font-size: 20px; padding: 20px 0px; }
.element {grid-column-end: span 3;}