.div-block {
  display: -webkit-box;
  display: -webkit-flex;
  display: -ms-flexbox;
  display: flex;
  height: 100vh;
}

.div-block-2 {
  display: -webkit-box;
  display: -webkit-flex;
  display: -ms-flexbox;
  display: flex; 
  margin-right: auto;
  margin-left: auto;
  -webkit-box-pack: center;
  -webkit-justify-content: center;
  -ms-flex-pack: center;
  justify-content: center;
  -webkit-box-flex: 1;
  -webkit-flex: 1;
  -ms-flex: 1;
  flex: 1;
}

.image {
  margin-top: 100px;
  text-align: center;
  height: auto;
}