body {
    background-color: #44a38e;
    color: #333;
    text-align: center;
    font-family: arial;
    font-size: 20px;
    margin: 0;
    padding: 0;
}

.cabecera {
    background: #37488b;
    box-shadow: 0px 2px 20px 0px rgba(0, 0, 0, 0.5);
    color: #fff;
    font-weight: bold;
    margin: 0;
    padding: 0.5em;
}

.cabecera .logo {
    width: 50px;
    vertical-align: middle;
}

.cabecera .tagline {
    padding: 0 0 0 1em;
    font-weight: normal;
    font-size: 0.8em;
}

.container {
    width: 70%;
    padding: 0;
    text-align: left;
    border: 1px solid #ddd;
    margin: auto;
}

.container h1 {
    font-size: 24px;
}

.post {
    background-color: #fff;
    padding: 1em;
}

.footer {
    background-color: #777;
    color: #fff;
    text-align: center;
    padding: 0.5em;
}

.post .imagen {
    display: flex;
    justify-content: center;
}

.post .imagen img{
    width: 75%;
}