body {
  background-image: url("fondo.jpg");
  background-repeat: no-repeat;
  background-attachment: fixed;
  background-size: cover; 
  font-weight: bold; 
  text-align: center;
  color: rgb(0, 0, 153);
  font-size: 20px;
}
a {
  text-decoration: none;
}

div.a {
  font-size: 30px;
}
div.b {
  font-size: 40px;
}
div.c {
  font-size: 40px;
}
  
div { 
    text-align: center;
}

table {
  font-family: arial, sans-serif;
  width: 100%;
}

td {
  border: 0px ;
  text-align:center;
  padding: 2px;
}

/* Style the footer */
.footer {
  background-color: cornflowerblue;
  padding: 50px;
  text-align: center;
  color: white;
  font-size:100%;
}
body {
  margin: 0;
} 
/* Style the header */
.header {
  background-color: cornflowerblue;
  padding: 20px;
  text-align: center;
  color: white;
}
.facebook, .whatsapp {
    background-color: #2e6329;
    border: 1px solid #fff;
    position: fixed;
    z-index: 999;
    border-radius: 50%;
    bottom: 20px;
    right: 25px;
    padding: 10px;
    transition: ease 0.3s;
    animation: efecto 1.2s infinite;
}
.facebook img, .whatsapp img {
    width: 80px;
    height:80px; 
    transition: ease 1s;
}
.facebook {
  bottom: 20px;
}
.whatsapp {
  bottom: 135px;
}
.facebook:hover, .whatsapp:hover {
    opacity: 0.7;
    filter: alpha(opacity=70);
    transform: scale(1.1);
    transition: 0.3s;
}
  
@keyframes efecto {
  0% {
    box-shadow: 0 0 0 0 rgba(0, 0, 0, 0.85);
  }
  100% {
    box-shadow: 0 0 0 25px rgba(0, 0, 0, 0);
  }
}
img {
    max-width: 100%;
    height: auto;
}