.base {
  display: flex;
  flex-direction: column;
  width: 100vw;
  height: 100vh;
}
.class1 {
  width: 100%;
}
 
.class2 {
  display: flex;
  flex-direction: row;
  height: 100%;
}

iframe {
 border: none;
 margin: 0px;
 overflow: hidden;
}