body,
h1,
h2,
h3,
h4,
h5,
h6,
.h1,
.h2,
.h3,
.h4,
.h5,
.h6,
input {
    font-family: Arial!important;
    font-size: 12px!important;
}

a:not(.sidebar-toggle) {
    font-family: Arial!important;
    font-size: 12px!important;
}
/*.sidebar-mini.sidebar-collapse .sidebar-menu > li:hover > a > span:not(.pull-right),
  .sidebar-mini.sidebar-collapse .sidebar-menu > li:hover > .treeview-menu {
    font-size: 12px!important;
    font-family: Arial!important;
  }

.sidebar-menu .treeview-menu > li {
    font-size: 12px!important;
    font-family: Arial!important;	
}*/