.iconos {
    color: green;
    font-size: 40px;
}

.row {
    margin-bottom: 20px;
}

h4 {
    transition: all 0.5s ease;
    color: black;
}

h4:hover {
    color: green;
}

h1 {
    margin: 20px 0px 20px 0px;
}

a {
    text-decoration: none;
    color: black;
}