body{
  background-color: blue;
    text-align: center;
}
.container{
  height: 1000px;
  background-color: lightblue;
  border: 20px solid blue;
  position: relative;
}

.welcome{
  background-color: lightblue;
  border: 20px solid blue;
  font-size: 2vw;
}

div.block {
width: 100px;
height: 100px;
line-height: 100px;
border: 1px solid black;
position: absolute;
text-align: center;             
background: rgb(0, 150, 0);
background: rgba(0, 150, 0, .5);
}

#1 {
	left: 2px;
  	top: 20px
}