.body_common {
  background-color: black;
  color: white;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  margin: 0;
  padding: 0;
}

.main_content_common {
  flex: 1;
  max-width: 960px;
  margin: 0 auto;
  padding: 0 5%;
  width: 100%;
  box-sizing: border-box;
}