*{
    margin: 0;
    padding: 0;
    border: none;
}
header {
    background-color: rgb(39, 233, 233);
    height: 60px;
   
}

header li{
    display: inline;
    margin: auto 10px;
}

header a{
    color: blue;
    font-size: 30px;
    text-decoration: none;
}

header a :hover{
    color: rgb(2, 97, 141);
}

header ul{
    text-align: center;
    padding-top: 21px;
}

header :hover{
    color: hsl(155, 98%, 48%);
}