15/28 87% Испытание: многоуровневое меню. Прошу помощи


#1

html,
body {
margin: 0;
padding: 0;
}

body {
width: 280px;
min-height: 280px;
padding: 10px;

font-size: 14px;
line-height: 1.4;
font-family: “Arial”, sans-serif;

background-color: #ecf0f1;
}

.main-menu {
width: 200px;
padding: 0px;
margin: 0px;
list-style: none;
}

.main-menu ul {
list-style: none;
padding: 0px;
border-bottom: 2px solid #2c3e50;
}

.main-menu li a {
display: block;
padding: 10px 15px;
text-decoration: none;
color: #ffffff;
background: #2980b9;
border-bottom: 2px solid #2c3e50;
}

.main-menu .active > a {
background-color: #1abc9c;
}

.main-menu li li a {
border: none;
padding: 10px;
color: #2980b9;
text-decoration: underline;
background-color: white;
}