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

body {
  overflow: hidden;
  position: relative;
  background: url(../img/back.jpg) no-repeat left center red;
  background-size: cover;
  font-family: Arial, Helvetica, sans-serif;
}


.imgppal {
  max-width: 90%;
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  border: 4px solid rgba(255,255, 255, 0.7);

  -webkit-box-shadow: 0px 2px 12px 0px rgba(0,0,0,0.45);
  -moz-box-shadow: 0px 2px 12px 0px rgba(0,0,0,0.45);
  box-shadow: 0px 2px 12px 0px rgba(0,0,0,0.45);
}

.bases {
  position: absolute;
  bottom: 0;
  left: 0;
  width: 100%;
  height: auto;
  color: #fff;
  background: rgba(0,0,0,0.4);
  text-decoration: none;
  text-align: center;
  padding: 10px;

}

.bases:hover {
  background: rgba(0,0,0,1);
}

.main {
  width: 100%;
  height: 100%;
  position: absolute;
  top: 0;
  left: 0;
  box-sizing: border-box;
  padding-bottom: 40px;
}

.iframe {
  width: 100%;
  height: 100%;
  overflow: scroll;
}