body {
    margin: 0;
    padding: 0;
    background-color:mistyrose;
}

h1 {
    padding: 5px;
    margin: 10px;
    font-style: italic;
}

.caja {
    width: 500px;
    height: 150px;
    margin: 15px auto;
    border-radius: 8px;
    text-align: justify;
    overflow: hidden;
}

@media (max-width: 550px) and (min-width: 400px) {
    .caja {
        width: 90%;
    }
}

.caja1 {
    background-color: palevioletred;
    padding: 10px;
    box-sizing: border-box;
    display: flex;
    justify-content: center;
    align-items: center;
    border: 2px solid rgb(141, 64, 89);
    font-family: Cambria, Cochin, Georgia, Times, 'Times New Roman', serif;
}

@media (max-width: 1080px) and (min-width: 600px) {
    .caja1 {
        background-color:lightcoral;
        border: rgb(153, 78, 78) solid 2px;
    }
}

@media (max-width: 600px) {
    .caja1 {
        background-color:darksalmon;
        border: rgb(133, 83, 67) solid 2px;
    }
}

.caja2 {
    background: radial-gradient(circle, steelblue, lightsteelblue, white, white);
    border: 1px solid gray;
    box-shadow: 3px 3px 6px grey;
    text-shadow: 2px 2px 4px rgb(70, 70, 70);
    box-sizing: border-box;
    display: flex;
    justify-content: center;
    align-items: center;
    font: italic 20px Georgia, 'Times New Roman', Times, serif;
}

.caja3 {
    background-image: url("buenos_aires.JPG"),
                      linear-gradient(90deg, darkseagreen, white, white, darkseagreen);      
    background-repeat: no-repeat, no-repeat;
    background-position: center, center;
    background-size: contain, 100% 100%;
    border: 1.5px solid seagreen;
}

.caja4 {
    background-image: url("obelisco.JPG");
    background-repeat: no-repeat;
    background-position: top;
    background-attachment: scroll;
    background-size: cover;
    box-shadow: 7px 7px 5px rgb(99, 98, 98);
}

.caja4 p {
    text-align: center;
    padding-top: 10px;
    font: italic bold 18px Cambria, Cochin, Georgia, Times, 'Times New Roman', serif;
    color: rgba(255, 255, 255, 0.712);
    text-shadow: 2px 2px 3px black;
}