Hello, Dear Andrea Berns!

To align the service buttons, please click WP Dashboard => Appearance => Customize => Additional CSS and paste this code here:

h3.entry-title {
    font-size: 20px;
    margin-bottom: 25px;
}
.isotope article.vertical-item .item-content{
    flex:1;
    display: flex;
    flex-direction: column;
    justify-content: space-between;
}

Then save changes and check the results at front-end.

Best Regards!