html,body{
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}
body{
    margin: 0;
    font-size: 18px;
}
a{
    color: #1E40AF;
    text-decoration: none;
}
img{
    height: auto;
}
.wrapper{
    max-width: 900px;
    margin: 0 auto;
}