body {
    font-family: Arial, sans-serif;
    background-color: #333;
    color: #fff;
}
header
{
    text-align: center;
    margin-top: 50px;
    color: #fff;
    font-size: 24px;
}

h1 {
    text-align: center;
    margin-top: 50px;
    color: #fff;
}
input[type="submit"] {
    padding: 12px 20px;
    border: none;
    cursor: pointer;
    font: bold 1.25rem/1 poppins;
    color: #71DFBE;
    position: absolute;
    top: 60%;
    left: 0;
    right: 0;
    background: #2B2D2F;
    height: 80px;
    width: 200px;
    text-align: center;
    transform: translateY(-50%);
    margin: 0 auto;
    border-radius: 4px;
}

input[type="submit"]:hover {
    background-color: #71DFBE;
    color: #2B2D2F;

}