body {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}
.page {
    background-image: url(/img/fondo.jpg);
    background-repeat: no-repeat;
    background-position: 0% 0%;
    background-size: cover;
    display: flex;
    justify-content: center;
    align-items: center;
    height: 100%;

}
.page .main {
    text-align: center;
}

.page .main .txt {
    padding:  10px 20px;
    margin: 10px auto;
    border-radius: 10px;
    background-color: #000;
    opacity:  0.6;
    font-family: monospace;
    color:  #aaa;
    font-size: 1.5rem;
    font-weight: 300;
}
/*.main img {
    vertical-align: middle;
    text-align:  center;
    width: 460px;
}
*/