Rollover button doesn’t appear in sidebar [closed]

solution for your problem

1.This css code conflict with your css ( for paypal button )

#widgets .textwidget a {
display: inline;
}

and

#widgets a {
display: inline-block;
margin: 0;
padding: 0;
text-decoration: none;
}

2.put !important in display property

a.paypalButton {
        display: block!important;
        width: 207px;
        height: 44px;
        background-image: url('http://kellygreenproject.com/wp-content/uploads/2013/05/General-Donate.png');
}