*{margin:0;
}
html{
  background: rgb(34,195,185);
background: linear-gradient(0deg, rgba(34,195,185,1) 0%, rgba(253,198,45,1) 100%);}
h1{color:#fff;}
cabecera{
  width:100%;
  height:8%;
  background: rgb(34,195,85);
 background: linear-gradient(0deg, rgba(34,195,85,1) 0%, rgba(253,247,45,1) 100%);}
img {
  display: block;
  margin: 0 auto;
  width: 70%;
}
contenedor{
  margin: 0 auto;
  width: 70%;
  height: 800px;
  background:#fff;
  }
  p{
    animation-duration:3s;
    animation-name: slidein;
    color: black;
  }