.mm-menu {
    display: none;
}
.mm-menu_opened{
    display: block;
}
.header_menu a {
    display: block;
    background: #dd0917;
    height: 41px;
    width: 41px;
    border-radius: 5px;
    color: #E6E6E6;
    font-size: 2em;
    cursor: pointer;
}
.header_menu a i{
    margin: 5px;
}
.header_menu {
    font-size: 16px;
    font-weight: bold;
    color: #fff;
    line-height: 40px;
    -moz-box-sizing: border-box;
    box-sizing: border-box;
    width: 42px;
    height: 40px;
}