#div_header{
    /* background-color:rgba(0, 0, 0, 0.5); */
    width: 100%;
    display: flex;
    color: white;
}

.div_menu_header{
    width: 25%;
    text-align: center;
    padding:  25px 0 25px 0;
}
.div_menu_header:hover{
    background-color:rgba(255, 255, 255, 0.5);
}