h1,#h1subtitle
{
    text-align: center;
}

h2
{ 
    text-decoration: underline;
}

body
{
    padding-left: 3%;
    width:  94%;
    text-align: justify;
    background-color: linear-gradient(45deg, blue, red);
}

img
{
    width: 0.8em;
}