body{
    @import url('https://fonts.googleapis.com/css?family=Open+Sans:400,700');
    font-family: 'Open Sans', sans-serif;
    font-weight:400;
}
h*{
    font-weight:700;
}
h1{
    font-size:36px;
}
h2{
    font-size:30px;
}
h3{
    font-size: 24px;
}
h4{
    font-size:20px;
}
p{
    font-size:16px;
}