header {
    padding: 25px 0 15px 0;
    background-color: black;
}

body, html {
    background-color: #190e32;
    color: #918c8c;
}
.content {
   
    padding: 10rem 0 10rem 0;
}
.err-main {
    text-align: center;
    max-width: 999px;
    margin: 0 auto;
}

h1 {
    font-size: 5rem;
    margin: 0;
    color: #ffffff;
}

h2 {
    font-size: 1.5rem;
    margin: 20px 0;
}

p.sorry-message {
    font-size: 1rem;
    color: #b3b3b3;
    padding: 2rem 0 1rem 0;
}

.btn {
    display: inline-block;
    margin-top: 20px;
    padding: 10px 20px;
    font-size: 1rem;
    color: #fff;
    background-color: #3631C6;
    text-decoration: none;
    border-radius: 5px;
    transition: background-color 0.3s ease;
}

.btn:hover {
    background-color: #605cdd;
    color: #ffffff;
}
h2.error-404 i {
    font-size: 85px;
    color: #FFCC00;
}
h3.error-para {
    color: #bdbdbd;
}