.w3-row-padding img {
    margin-bottom: 12px;
}

.span_nat{
    color: blue;
    font-size: 20px;
}
body span{
    color: red;
    font-size: 20px;
    font-weight: bold;
}

#para_1 p{
    font-size: 18px;
}

body li a{
    text-decoration: none;
}