*{
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}
html{
    font-size: 15px;
    font-family: "Roboto Cn", sans-serif;
}
a{
    text-decoration: none;
    color: white;
}


.container{
    max-width: 120rem;
    width: 100%;
    margin: 0 auto;
}
nav{
    background-color:none; 
    padding-top: 5rem;
    display: flex;
    justify-content: space-between;
    align-items:center;
    text-transform: uppercase;
    font-size: 1.0rem;
}

.brand{
    font-size: 3rem;
    font-weight: 300;
}

.brand span {
    background-color:skyblue;
    color: blue;
}

nav ul{
    display: flex;
}

nav ul li{
    background-color:blue;
    list-style:none;
}
nav ul li ul{
    position:absolute; 
    visibility:hidden;
}
nav ul li a{
    padding: 1rem 0;
    margin: 0 3rem;
    position: relative;
    letter-spacing: 1px; 
    display:block;
}


nav ul li a::before,
nav ul li a::after{
    content: '';
    position: absolute;
    width: 100%;
    height: 5px;
    background-color: red;
    left: 0;
    transform: scaleX(0);
    transition: all .5s;
}




nav ul li:hover ul {
	visibility: visible;
    display: block;
    
}

nav ul li a::before{
    top: 0;
    transform-origin: left;
}

nav ul li a::after{
    bottom: 0;
}
nav ul li a:hover::before,
nav ul li a:hover::after{
    transform: scaleX(1);
}