body{
  background-color: gray;
}
img{
  max-width: 100%;
  display: none;
}
.main--wrapper{
  background-color: white;
  /* height: 100%; */
  width: 100%;
  display: flex;
}

.main-nav__wrapper{
  max-width: 20%;
  background-color: red;
}


.main-header__wrapper{
  background-color: purple;
}

.main-content__wrapper{
  background-color: blue;
  flex-basis: 80%;
}
.main-header_header--title{
  background-color: orange;
}
.main-header_header--info{
  background-color: white;
}