body {
    background: #bcc9c7;
    color: rgb(0, 0, 0);
    font-family: "Kosugi", sans-serif;
    height: 100vh;
    display: flex;
    justify-content: center;
    align-items: center;
    margin: 0; 
}

.main-box{
    width: 500px;
}