body{
  position: absolute;
  top: 0;
  left: 0;
  width: 100vw;
  height: 100vh;
  margin: 0;
  padding: 0;
  box-sizing: border-box;
  font-family: Verdana, Geneva, Tahoma, sans-serif;
}
.container{
    width: 100vw;
    height: 100vw;
}
.lector{
    width: 95%;
    height: 100vh;
    margin: 0 auto;
    background-color: aqua;
}