body { 

         background-color: #04042b;
background-image:

radial-gradient(white, rgba(255,255,255,.15) 1px, transparent 30px),

radial-gradient(rgba(255,255,255,.4), rgba(255,255,255,.1) 2px, transparent 30px);
background-size: 550px 550px, 350px 350px, 250px 250px, 150px 150px; 
background-position: 0 0, 40px 60px, 130px 270px, 70px 100px;
   box-sizing: border-box;
     margin:0px;
     padding: 0px;     
 }


.a2 {
  
  color: white;
  text-decoration: none;

}


.main {
     
  margin: 0 auto;
  width: 790px;
  box-sizing: border-box;
   
}

.top {

  background-color: #22419e;
  border:5px solid white;
  border-radius: 25px;
  color: white;
  font-size: 150%;
  margin-bottom: 4px;
  width: 100%;

}



.bottom {
      
     float: left;
     border: 5px solid white;
    background-color: #22419e;
     border-radius: 25px;
     color: white;
     font-size: 150%;
     margin-bottom: 30px;
    
     width: 100%;


}


.next {

     text-align: center;
     font-weight: bold;

}


.page {
   width: 380px;
    color:  white;
     float: left;
     
     
     height: 640px;
     background-color: #22419e;
     border-radius: 25px;
     margin-bottom: 10px;
    border: 5px solid white;
}


.left_page {

   margin-right: 10px;

}

.right_page {

   margin-left: 0px;

}

.dialogue {

    display: flex;
    float: left;
    width: 100%;

 min-height: 80px; 
  border-top: 1px solid white;
  border-bottom: 1px solid white;

  margin-bottom: 10px;

}

@media (max-width: 850px) {
  /* CSS that should be displayed if width is equal to or less than 800px goes here */
    
.page {

     width: 400px;

}


body  {

  width: 420px;

}
.top,
.page,
.bottom {
  box-sizing: border-box;
  padding: 0;
  margin: 0;
  margin-bottom: 10px;
}




.left_page {

   margin-right: 0px;

}

  .main { 
    box-sizing: border-box;
    width: 400px;
    margin: 0 auto;
    padding: 0px;

   }

   .top {

width:  400px;

}
.bottom {
      

width:  400px;

}

}