body {
        font-family: "Poppins", sans-serif;
        margin: 0;
        padding: 0;
        background-image: linear-gradient(to top, rgb(43 105 183, 1) 0%, rgb(31 76 132 / 65%) 50%);
        color: #333;
        background-color: #020202;
    }
    header {
        text-align: center;
        padding: 15px;
        background: #020202;
    }
    article {
        max-width: 800px;
        margin: auto;
        padding: 0 15px;
        color: #fff;
    }

    h1 {
        text-align: center;
        text-transform: uppercase;
        text-shadow: 1px 2px #000;
    }
    footer {
        background: linear-gradient(180deg, rgb(0 0 0 / 18%) 0%, rgba(0, 0, 0, 0) 100%);
        border-top: solid 2px rgb(23, 89, 104);
        text-align: center;
        color: #fff;
        padding: 15px;
        font-size: small;
    }
    .buttons {
        margin: 10%;
        text-align: center;
    }

    .btn-hover {
        width: 250px;
        font-size: 16px;
        font-weight: 600;
        color: #fff;
        cursor: pointer;
        margin: 20px;
        height: 55px;
        text-align:center;
        border: none;
        background-size: 300% 100%;

        border-radius: 50px;
        moz-transition: all .4s ease-in-out;
        -o-transition: all .4s ease-in-out;
        -webkit-transition: all .4s ease-in-out;
        transition: all .4s ease-in-out;
    }

    .btn-hover:hover {
        background-position: 100% 0;
        moz-transition: all .4s ease-in-out;
        -o-transition: all .4s ease-in-out;
        -webkit-transition: all .4s ease-in-out;
        transition: all .4s ease-in-out;
    }

    .btn-hover:focus {
        outline: none;
    }
    .btn-hover.color-9 {
        background-image: linear-gradient(to right, #674aff, #8374cb, #0c0143, #443d68);
        box-shadow: 0 4px 15px 0 rgba(65, 132, 234, 0.75);
        display: flex;
        align-items: center;
        justify-content: center;
        margin: 15px auto;
    }
    li{
        margin-bottom: 10px;
    }