.responsive body
{
   min-width: 320px;
}

@media all and (max-width: 599px)
{
.block {height: 380px; width: 400px; margin: 0;background: none;}
.block img {width: 320px;}
.button {width: 300px; margin: -60px -150px;font-size: 22px;}
h1 {font-size: 50px;}
}

@media all and (max-width: 399px)
{
.block {height: 360px; width: 320px; margin: 0;}
.block img {width: 320px;}
.button {width: 300px; font-size: 22px;}
h1 {font-size: 50px;}
}