.div-block {
  height: auto;
  flex-flow: column;
  justify-content: center;
  align-items: center;
  display: flex;
}

.text-block {
  width: auto;
  height: 3%;
  flex-wrap: nowrap;
  justify-content: center;
  align-items: center;
  margin-left: auto;
  margin-right: auto;
  font-family: system-ui, -apple-system, BlinkMacSystemFont, Segoe UI, Roboto, Noto Sans, Ubuntu, Cantarell, Helvetica Neue, Oxygen, Fira Sans, Droid Sans, sans-serif;
  font-size: 20px;
  font-weight: 300;
  display: inline-block;
}

.body {
  height: auto;
  justify-content: center;
  display: flex;
}

@media screen and (max-width: 991px) {
  .div-block {
    flex-direction: column;
    justify-content: center;
    align-items: center;
    display: flex;
  }

  .text-block {
    font-family: system-ui, -apple-system, BlinkMacSystemFont, Segoe UI, Roboto, Noto Sans, Ubuntu, Cantarell, Helvetica Neue, Oxygen, Fira Sans, Droid Sans, sans-serif;
    font-weight: 300;
  }
}

@media screen and (max-width: 767px) {
  .text-block {
    font-family: system-ui, -apple-system, BlinkMacSystemFont, Segoe UI, Roboto, Noto Sans, Ubuntu, Cantarell, Helvetica Neue, Oxygen, Fira Sans, Droid Sans, sans-serif;
    font-weight: 300;
  }
}

@media screen and (max-width: 479px) {
  .div-block {
    width: 100%;
    height: 100%;
    flex-flow: column wrap;
    align-content: stretch;
    justify-content: center;
    align-items: center;
    margin-left: auto;
    margin-right: auto;
    overflow: auto;
  }

  .text-block {
    font-family: system-ui, -apple-system, BlinkMacSystemFont, Segoe UI, Roboto, Noto Sans, Ubuntu, Cantarell, Helvetica Neue, Oxygen, Fira Sans, Droid Sans, sans-serif;
    font-size: 20px;
    font-weight: 300;
  }

  .body {
    height: 100%;
  }
}