body {
    background-image: url(../img/handshake3.jpg);
    background-repeat:no-repeat;
    width: 100%;
    height: 100%;
    background-size: 100%;
}

.top{
    margin-top: 50%;
}

.caja{
    border-radius: 10px;
    background:  rgba(165, 192, 232,0.4);
}

h3{
    margin-bottom: 20px;
}

.footer {
    position: fixed;
    left: 0;
    bottom: 0;
    width: 100%;
    
    
    text-align: right;
  }