.wrapper {
    position: absolute;
    top: 0;
    left: 0;
    height: 100%;
    width: 100%;
    /*background: linear-gradient(-135deg, #c850c0, #4158d0);*/
    /* background: linear-gradient(375deg, #1cc7d0, #2ede98); */
    /* background: linear-gradient(-45deg, #e3eefe 0%, #efddfb 100%);*/
    /* clip-path: circle(25px at calc(0% + 45px) 45px); */
    background: rgba(0, 0, 0, 0.733);
    clip-path: circle(25px at calc(100% - 45px) 45px);
    transition: all 0.3s ease-in-out;
    z-index: 1;
}

#active:checked~.wrapper {
    clip-path: circle(75%);
}

.menu-btn {
    position: absolute;
    z-index: 2;
    right: 20px;
    top: 20px;
    height: 50px;
    width: 50px;
    text-align: center;
    line-height: 50px;
    border-radius: 50%;
    font-size: 20px;
    color: #fff;
    cursor: pointer;
    /*background: linear-gradient(-135deg, #c850c0, #4158d0);*/
    /* background: linear-gradient(375deg, #1cc7d0, #2ede98); */
    /* background: linear-gradient(-45deg, #e3eefe 0%, #efddfb 100%); */
    background: rgb(0, 0, 0);
    transition: all 0.3s ease-in-out;
}

#active:checked~.menu-btn {
    color: #fff;
}

#active:checked~.menu-btn i:before {
    content: "\f00d";
}

.wrapper ul {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    list-style: none;
    text-align: center;
}

.wrapper ul li {
    margin: 15px 0;
}

.wrapper ul li a {
    color: none;
    text-decoration: none;
    font-size: 30px;
    font-weight: 500;
    padding: 5px 30px;
    color: #fff;
    border-radius: 50px;
    background: rgb(0, 0, 0);
    position: relative;
    line-height: 50px;
    transition: all 0.3s ease;
}

.wrapper ul li.class a {
    color: none;
    text-decoration: none;
    font-size: 30px;
    font-weight: 500;
    padding: 5px 30px;
    color: #fff;
    border-radius: 50px;
    background: rgb(63, 63, 63);
    position: relative;
    line-height: 50px;
    transition: all 0.3s ease;
}

.wrapper ul li a:after {
    position: absolute;
    content: "";
    background: #fff;
    background: linear-gradient(#14ffe9, #ffeb3b, #ff00e0);
    /*background: linear-gradient(375deg, #1cc7d0, #2ede98);*/
    width: 104%;
    height: 110%;
    left: -2%;
    top: -5%;
    /* if the font is 'Oswald'*/
    border-radius: 50px;
    transform: scaleY(0);
    z-index: -1;
    animation: rotate 1.5s linear infinite;
    transition: transform 0.3s ease;
}

.wrapper ul li a:hover:after {
    transform: scaleY(1);
}

.wrapper ul li a:hover {
    color: #fff;
}

input[type="checkbox"] {
    display: none;
}

@keyframes rotate {
    0% {
        filter: hue-rotate(0deg);
    }

    100% {
        filter: hue-rotate(360deg);
    }
}