HTML span align center not working?

Question

I have some HTML:

This is some text in a div element!

The Div is c

Answer 1

span.login-text {
    font-size: 22px;
    display:table;
    margin-left: auto;
    margin-right: auto;
}

<span class="login-text">Welcome To .....CMP</span>

For me it worked very well. try this also