body{
    margin: 0px;
    font-family: sans-serif;
}
header{
    width: 100%;
    background: #4e94ab;
}
#btn-menu{
    display: none;
}
header label{
    display: none;
    width: 30px;
    height: 30px;
    padding: 10px;
    border-right:1px solid #fff ;
}
header label:hover{
    cursor: pointer;
    background: rgba(0, 0, 0, 0.3);
}
.menu ul{
    margin: 0;
    list-style: none;
    padding: 0;
    display: flex;
}
.menu li{
    border-right: 1px solid #fff;
}
.menu li:hover{
    background: rgba(0, 0, 0, 0.3);
}
.menu li a{
    display: block;
    padding: 15px 50px;
    color: #fff;
    text-decoration: none;
}
main{
    padding: 20px;
}
@media(max-width:768px){
    header label{
        display: block;
    }
    .menu{
        position: absolute;
        background: #4e94ab;
        width: 70%;
        margin-left: -70%;
        transition: all 0.5s;
    }

    .menu ul{
        flex-direction: column;
        border-top: 1px solid #fff;
    }
    #btn-menu:checked ~ .menu{
        margin: 0;
        
    }
}