.main_title::after {
  content: "Strategy+ Business Lab";
  animation: main_title 5s infinite,
             main_title_content 20s infinite;
}

.subtitle:after {
  content: "Strategic about your business";
  animation: subtitle 5s infinite,
             subtitle_content 20s infinite;
}

@keyframes main_title_content {
  0%, 20% {
    content: "Strategy+ Business Lab";
  }
  25%, 45% {
    content: "Strategy+ Business Lab";
  }
  50%, 70% {
    content: "Source of global opportunites";
  }
  75%, 95% {
    content: "Source of global opportunites";
  }
}

@keyframes subtitle_content {
  0%, 20% {
    content: "Strategic about your business";
  }
  25%, 45% {
    content: "Because Business is Human";
  }
  50%, 70% {
    content: "Local Market Intelligence";
  }
  75%, 95% {
    content: "Industry Know-how";
  }
}