.banner{
  width: 970px;
  min-height: 250px;
  height: 250px;
  animation: background 20s linear 0s infinite;
}

@keyframes background {
  0%{background-image: url("../images/Fundo-01.png");}
  30%{background-image: url("../images/Fundo-02.png");}
  60%{background-image: url("../images/Fundo-03.png");}
  100%{background-image: url("../images/Fundo-03.png");}
}

@-webkit-keyframes background {
  0%{background-image: url("../images/Fundo-01.png");}
  30%{background-image: url("../images/Fundo-02.png");}
  60%{background-image: url("../images/Fundo-03.png");}
  100%{background-image: url("../images/Fundo-03.png");}
}

.interno1{
  width: 920px;
  min-height: 250px;
  height: 250px;
  position: relative;
  left: 0px;
  top: 0px;
  animation: frente 20s linear 0s infinite;
}

@keyframes frente {
  0%{background-image: url("../images/Banner 970x250-01.png");}
  30%{background-image: url("../images/Banner 970x250-01.png"); opacity: 0;}
  32%{background-image: url(""); opacity: 1;}
  35%{background-image: url("../images/Banner 970x250-02.png"); opacity: 1;}
  60%{background-image: url("../images/Banner 970x250-02.png"); opacity: 0;}
  62%{background-image: url(""); opacity: 1;}
  64%{background-image: url("../images/Banner 970x250-03.png"); opacity: 1;}
  100%{background-image: url("../images/Banner 970x250-03.png"); opacity: 0;}
}

@-webkit-keyframes frente {
  0%{background-image: url("../images/Banner 970x250-01.png");}
  30%{background-image: url("../images/Banner 970x250-01.png"); opacity: 0;}
  32%{background-image: url(""); opacity: 1;}
  35%{background-image: url("../images/Banner 970x250-02.png"); opacity: 1;}
  60%{background-image: url("../images/Banner 970x250-02.png"); opacity: 0;}
  62%{background-image: url(""); opacity: 1;}
  64%{background-image: url("../images/Banner 970x250-03.png"); opacity: 1;}
  100%{background-image: url("../images/Banner 970x250-03.png"); opacity: 0;}
}

.botao{
  position: absolute;
  z-index: 999;
  bottom: 15px;
  left: 40%;
font: 20px Tahoma, Geneva, sans-serif;
font-style:normal;
color:#ffffff;
background:#1568db;
border:0px solid #ffffff;
text-shadow:0px -1px 1px #222222;
border-radius:10px 10px 10px 10px;
-moz-border-radius:10px 10px 10px 10px;
-webkit-border-radius:10px 10px 10px 10px;
width:138px;
padding:10px 23px;
cursor:pointer;
margin:0 auto;
animation: botao 20s linear 0s infinite;
opacity: 0;
}


@keyframes botao {
  0%{opacity: 0;}
  62%{opacity: 0;}
  66%{opacity: 1;}
  100%{opacity: 0;}
}

@-webkit-keyframes botao {
  0%{opacity: 0;}
  62%{opacity: 0;}
  66%{opacity: 1;}
  100%{opacity: 0;}
}
