#menu_a ul. {
margin-left: auto;
    margin-right: auto;
padding: 0; 
list-style: none; 
}
#menu_a li{ 
  width: auto;
display: inline; 
padding: 0; 
margin: 0; 
border-right: 0px
}
#menu_a li a{
display: block; 
border: 1px solid #9F99A3;
background-color: #EEEEEE;
padding: 3px 10px;
text-decoration: none;
color: #333;
width: 120px; 
margin: 2px 0px;
text-align: center;
font-size: 14px;

}
#menu_as li a:hover{
border: 1px solid #8593A9;
background-color: #9EB7DD;

}



#container {
  display: flex;
	justify-content: space-between;
}
@media screen and (max-width: 599px) {
  #container {
    flex-direction: column;
  }
}
#main {
  flex: 60%;  

}
#side {
  flex: 40%;
    margin-right: 15px;
    margin-top: 14px;


}