:root{

    --color-light-easy:rgb(248, 249, 250);
    --color-light-medium:rgb(233, 236, 239);
    --color-light-hard:rgb(222, 226, 230);
    --color-light-harder:rgb(206, 212, 218);
    --color-light-dark:rgb(173, 181, 189);
    --color-dark-easy: rgb(108, 117, 125);
    --color-dark-medium:rgb(73, 80, 87); 
    --color-dark-hard:rgb(52, 58, 64); 
    --color-dark-harder:rgb(33, 37, 41); 

}
.navButton {
    cursor: pointer;
    padding: 5px 10px;
    border: unset;
    border-radius: 5px;
    color: #454545;
    z-index: 1;
    background: var(--color-light-easy);
    position: relative;
    font-weight: bold;
    font-size: 15px;
    -webkit-box-shadow: 4px 8px 19px -3px rgba(0,0,0,0.27);
    box-shadow: 4px 4px 19px -3px rgba(0,0,0,0.27);
    transition: all 250ms;
    overflow: hidden;
    font-size: 14px;
    font-weight: bold;

    
}
   
.navButton::before {
    content: "";
    position: absolute;
    top: 0;
    left: 0;
    height: 100%;
    width: 0;
    border-radius: 5px;
 
    background-color: #04b539;
    z-index: -1;
    -webkit-box-shadow: 4px 8px 19px -3px rgba(0,0,0,0.27);
    box-shadow: 4px 8px 19px -3px rgba(0,0,0,0.27);
    transition: all 250ms;
    
    
}
   
.navButton:hover {
    color: #e8e8e8;
}
   
.navButton:hover::before {
    width: 100%;
    
}