body, html {
    margin: 0;
    padding: 0;
    height: 100%;
}

body{
    /*background-color: brown;*/
    background: rgb(235,42,21);
    background: radial-gradient(circle, rgba(235,42,21,1) 5%, rgba(142,0,139,1) 55%, rgba(142,0,102,1) 100%);
}


.center {
    display: block;
    margin-left: auto;
    margin-right: auto;
    margin-top: 10px;
    width: 50%;
  }