Wp-Show Post Link Color

so I want to Change the links for only WPSP to be white. and I want the customize colors to stay black not sure what I am doing wrong but nothing is changing the color for just this one container with WPSP
here is the styling for I have I have tried adding .wp-show-posta a{ color:#fffff} but so far can't get anything to change the color?

/* WPSP styles */
h2.wp-show-posts-entry-title {
font-weight: 500;
font-size: 20px;
text-align: center;

}

@media (min-width: 769px) {
.wp-show-posts-image {
position: relative;
overflow: hidden;
}

.wp-show-posts-image img {
max-width: 100%;

-moz-transition: all 0.3s;
-webkit-transition: all 0.3s;
transition: all 0.3s;
}

.wp-show-posts-image:hover img {
-moz-transform: scale(1.1);
-webkit-transform: scale(1.1);
transform: scale(1.1);
}
}