* {
    box-sizing: border-box;
}

html,
body {
    margin: 0;
    min-height: 100%;
}

body {
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;

    font-family: Arial, sans-serif;

    background: #f7f7f7;
    color: #172b3a;
}

.portada {
    width: min(90%, 700px);
    text-align: center;
}

.logo {
    width: 400px;
    max-width: 80%;
    margin-bottom: 30px;
}

h1 {
    margin: 0 0 15px;
    font-size: clamp(2rem, 5vw, 4rem);
}

p {
    margin-bottom: 40px;
    font-size: 1.2rem;
}

small {
    opacity: .5;
}