.widget_blog_subscription,
.widget_blog_subscription #subscribe-text, 
.widget_blog_subscription #subscribe-submit {
   text-align: center;
}
.widget_blog_subscription #subscribe-email input {
   border-width:  0 0 8px 0;
   font-size: 1.2rem;
}

.widgets--1 .widget {
   margin: 0 auto;
}