body {
    padding: 1em;
}

#main-logo {  
    margin: auto; 
    position: relative; 
    max-width: 350px;
    padding: 3em;
    border: 1px solid #CCC;
    border-radius: 10px;
    box-shadow: 0 4px 8px 0 rgba(0, 0, 0, 0.2), 0 6px 20px 0 rgba(0, 0, 0, 0.19);
}

#main-logo p { 
    padding-top: 2em;
    font-family:Verdana, Geneva, Tahoma, sans-serif;
    display: flex;
    justify-content: center;
}

#main-logo span {
    display: block;
}

#span-2 {
    margin-left: 1.5em;
}
#span-3 {
    margin-left: 3em;
}

#main-logo em {
    font-size: 1.2em;
    font-weight: bold;
    font-style: italic;
}