Polish homepage feature cards (#14)

Author: warrendodsworth

src/styles/global.css

@@ -295,10 +295,27 @@ h1 {
 }
 
 .feature-card {
+  padding: 1.75rem;
   min-height: 100%;
-  display: grid;
-  align-content: start;
-  gap: 0.9rem;
+  display: flex;
+  flex-direction: column;
+  align-items: flex-start;
+  gap: 1rem;
+}
+
+.feature-card h3 {
+  font-size: clamp(1.85rem, 3vw, 2.55rem);
+  line-height: 1.08;
+}
+
+.feature-card p {
+  margin: 0;
+  font-size: 1.06rem;
+}
+
+.feature-card .button-muted {
+  width: 100%;
+  margin-top: auto;
 }
 
 .feature-card--accent {
@@ -308,9 +325,12 @@ h1 {
 .feature-card--image {
   padding: 0;
   min-height: 300px;
+  position: relative;
 }
 
 .feature-card--image img {
+  position: absolute;
+  inset: 0;
   width: 100%;
   height: 100%;
   object-fit: cover;