How to change Bold text + Font-family

.h5p-blanks .h5p-question-content p {
    line-height: 1.75em;
    margin: 0 0 1em;
    font-family: lato,sans-serif !important;
    color: #333 !important;
}

How to change font family also All content inside<p></p> tags showing bold every time. how can we remove bold text ?

Thanks