.p1 {
    background-color: #3cdc6069;
    background-position: center; 
}
#pH {
    font-size: 1.7em;
}
#ul_1 {
    font-size: 1.2em;
}
.serif {
    font-family: "Times New Roman", Times, serif;
    font-size: 1.7em;
}
.pH1 {
    font-size: 1.5em;
    text-align: center;
    line-height: 180%;
}