html, body {
  height: 100%;
  margin: 0;
}

body {
  background-color: #e8edf3;
}

.flex-container {
  padding: 0;
  margin: 0;
  list-style: none;
  height: 100%;

  display: flex;
  align-items: center;
  justify-content: center;
}

.flex-container .row {
  display: flex;

  overflow: hidden;
  background-color: white;
  width: 60%;
  max-width: 800px;
  height: 120px;
  padding: 15px;
  cursor: -webkit-grab;
  cursor: -moz-grab;
  cursor: grab;
}

.block {
  flex: auto;
  flex-shrink: 0;
  width: 120px;
  height: 120px;
}

.block--blue {
  background-color: blue;
}

.block--red {
  background-color: red;
}

.block--yellow {
  background-color: yellow;
}

.block--green {
  background-color: green;
}

.block--pink {
  background-color: pink;
}

.block--purple {
  background-color: purple;
}

.block--orange {
  background-color: orange;
}

.block--black {
  background-color: black;
}