body {font-family: arial;margin: 0;background-image: url("/chas.webp");background-repeat: no-repeat;background-position: top center;background-size: cover;overflow: hidden;}
.block {background-color: rgba(0,0,0,.6);color: #fff;text-align: center;height: 100vh;padding: 3rem 1.5rem;}

@media screen and (max-width: 650px) {
.bloci {padding: 1.5rem;}
}