@import url('https://fonts.googleapis.com/css2?family=Oswald&display=swap');
*{
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    font-family: 'Oswald', cursive;
}
body{
    display: flex;
    justify-content: left;
    padding: 165px 0px 0px 100px;
    align-items: top;
    min-height: 100vh;
    background: #1e2125;
}
ul{
    position: relative;
    transform: skewY(-15deg); 
}
ul li{

    position: relative;
    list-style: none;
    width: 150px;
    background: #3e3f46;
    padding: 15px;
    z-index: var(--i);
    transition: 0.5s;
}
ul li:hover{
    background: #33a3ee;
    transform: translateX(50px);
}
ul li::before{
    content: '';
    position: absolute;
    top:0;
    left: -40px;
    width: 40px;
    height: 100%;
    background: #2e3133;
    transform-origin: right;
    transform: skewY(45deg);
    transition: 0.5s;
}
ul li:hover::before{
    background: #1f5378;
}
ul li::after{
    content: '';
    position: absolute;
    top: -40px;
    left: 0;
    width: 100%;
    height: 40px;
    background: #35383e;
    transform-origin: bottom;
    transform: skewx(45deg);
    transition: 0.5s;
}
ul li:hover::after{
    background:#2982b9;
}
ul li a {
    text-decoration: none;
    color: #999 ;
    display: block;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    transition: 0.5s;
}
ul li:hover a{
    color: #fff;

}

ul li:last-child::after{
    box-shadow: -120px 120px 20px rgba(0,0,0,0.25);
}