.flex-container_2er {
  display: flex;
  justify-content: center;
}

.flex-container_2er > div {
  margin: 30px;
  padding: 20px;
}
.weite1 {
	width:68%;
}
.weite2 {
	width:32%;
}
@media (max-width: 800px) {
.flex-container_2er {
  flex-direction: column;
  justify-content: center;
  align-items: center;
}
.flex-container_2er > div {
	width:95%;
	padding: 4px;
}
.weite1 {
	width:95%;
}
.weite2 {
	width:95%;
}
}