.menu-container {
  top: 15px;
  left: 0;               /* Right edge */
  height: 100px;           /* Full height so we can add a vertical border */
  width: 100%;
 /* display: flex;*/
  align-items: center;    /* Vertically center the button */
  z-index: 1000;
}

.section-container {
  height: 100%;           /* Full height so we can add a vertical border */
  width: 90%;
  margin: 0 auto;   /* centers horizontally */
 /* display: flex;*/
  align-items: center;    /* Vertically center the button */
  z-index: 1000;
  flex: 1;
}

.activity-container {
  max-width: 700px;
  margin: 0 auto;
}