.main_menu{
display: block;
background:#ffffff;
}
.main:hover{
display: block;
color: black;
background: #F4FAFD;
}
.main_menu a{
display: block;
background: white;
text-decoration: none;
border-
bottom: 1px dashed #dcdee2;
padding: 10px;
}
.main_menu a:hover{
background: #F4FAFD;
padding: 10px;
text-decoration: none;
}