body
{
  background: black;
  padding:10px;
}

h1
{
  color: white;
  padding: 10px;
  border-radius: 5px;
}

.div1
{
  width: width:90%;
  padding: 20px;
  border-radius: 20px;
  background: red;
  margin-bottom: 10px;
}

input
{
  padding: 10px;
  border-radius: 10px;
}

@media only screen and (max-width: 600px)
{
  body
  {
    background: white;
    padding: 0px;
  }
  .div1
  {
    width: 150%;
    padding: 5px;
    border-radius: 20px;
    background: red;
    margin-bottom: 10px;
  }

}