body{
    background-color: #223849;
    color:#fff;
    font-family: Arial, Helvetica, sans-serif;
    font-size:18px;
}
.content {
    display:flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    margin-top:10%;
    text-align: center;
}
img {
    max-width:300px;
    width:100%;
    height:auto;
}
.by{
    font-weight: bold;
    color:#f1c403;
}