html, body {
  background-color:  hsl(48, 100%, 96%);
  height: 100%;
  display: flexbox;
}

/*Header START*/
/*Navigation bar START*/
.navbar {
  width: 100%;
    display: flex;
    justify-content: center;
}
#my-navbar img {
  display: block;
}

#my-navbar a {
  text-decoration: none;
  color: white;
}

#my-navbar {
  padding: 10px;
}

#my-navbar .container,
#my-navbar .container>div {
  display: flex;
}

#my-navbar .container {
  /* Set a max width to squeeze the navbar */
  max-width: 600px;
  margin-left: auto;
  margin-right: auto;
}

#my-navbar .container>div {
  flex: 1;
  align-items: center;
  justify-content: space-around;
}

/*Navigation bar END*/
/*Header END*/
/* Main style START */
.btn {
display: inline-block;
height: 200px;
padding: 35 35;
margin: 0;
vertical-align: top;
width: 200px;
justify-content: space-between;
}

/* Main style END */
@media screen and (max-width: 768px) {
#my-navbar .container {
  margin: 0;
}
#my-navbar .container,
#my-navbar .container>div {
  flex-direction: column;
  align-items: flex-start;
}
#my-navbar .item {
  margin: 5px;
}
#my-navbar .container>div:nth-child(1) {
  order: 2;
}
#my-navbar .container>div:nth-child(2) {
  order: 1;
}
#my-navbar .container>div:nth-child(3) {
  order: 3;
}
}