*{
    margin:0;
    padding:0;
    box-sizing:border-box;
}

body{

    background:white;
    font-family:Arial, sans-serif;
}

.menu{

    width:300px;
    margin:40px auto;

    border:1px solid #33e0c5;
}

.menu h1{

    text-align:center;

    color:#666;

    font-size:24px;

    padding:15px 0;
}

.search{

    display:flex;

    padding:12px;

    border-top:1px solid #ddd;
    border-bottom:1px solid #ddd;
}

.search input{

    flex:1;

    height:35px;

    padding-left:10px;

    border:1px solid #ccc;
}

.search button{

    width:40px;

    border:1px solid #ccc;

    background:white;

    cursor:pointer;
}

.menu ul{

    list-style:none;
}

.menu ul li a{

    display:block;

    padding:14px;

    text-decoration:none;

    color:#4f78b8;

    font-weight:bold;

    background:#f3f3f3;

    border-bottom:1px solid #ddd;
}

.menu ul li a:hover{

    background:#d9edf7;
}

.submenu li a{

    background:white;

    padding-left:50px;

    color:#4f78b8;

    font-weight:normal;
}

.submenu li a:hover{

    background:#e6f7ff;
}
.back{
    text-align:center;
    margin:35px 0;
}

.back a{

    display:inline-block;

    padding:12px 25px;

    background:linear-gradient(135deg,#4CAF50,#2E8B57);

    color:white;

    text-decoration:none;

    border-radius:30px;

    font-size:18px;

    font-weight:bold;

    box-shadow:0 5px 10px rgba(0,0,0,.2);

    transition:.3s;
}

.back a:hover{

    background:linear-gradient(135deg,#2E8B57,#4CAF50);

    transform:translateY(-3px);

    box-shadow:0 8px 18px rgba(0,0,0,.3);
}