nav li {
    width: 200px;
}
nav a:hover{
    color: #FFFFFF !important;;
    background-color: rgb(31, 129, 189);
    width: absolute;
    height: absolute;
    border-radius: 10px;
    border: 2px double yellow;
    /*transition: border 0.5s ease-in-out; */
    
    }