.sub_menu {
    background-color: white;
    top: 78px;
}

.main_page h3 {
    padding-bottom: 0;
    margin-bottom: 0;
}

.main_page p {
    padding-top: 5px;
    margin-top: 0;
    text-align: justify;
}

@media (max-width: 770px){
    .sub_menu {
        position: relative;
        box-shadow: 0 0 11px rgb(0,0,0, 10%);
        padding-bottom: 5px;
        padding-top: 5px;
        border-radius: 5px;
        top: 0px;
        background-color: transparent;
      }
}