body{
    display: block;
    width:100%; 
    padding:40% 30% ;
    font-family: Verdana;
    font-size: 2em;
    background-color: black;
    color:white;
    text-align: center;
} 

#container1{
display:block;
width:100%;
margin:10%;
background: gray;
color:blue;
}