.welcome-info.about .item-title {
  text-align: center;
}
.welcome-info.about .item-content {
  background: #E3E3E3;
  color: #000000;
  font-size: 16px
}
@media(max-width:768px) {
  .welcome-info.about .item-content {
    font-size: 14px
  }
}
@media(max-width:500px) {
  .welcome-info.about .item-content {
    font-size: 12px
  }
}