diff --git a/meshmap_frontend/src/style.css b/meshmap_frontend/src/style.css
index 925be29..f281c47 100644
--- a/meshmap_frontend/src/style.css
+++ b/meshmap_frontend/src/style.css
@@ -1307,6 +1307,51 @@ h3 {
   overflow-wrap: anywhere;
 }
 
+.trajectory-point-popup .leaflet-popup-content {
+  width: 240px !important;
+  max-width: 240px !important;
+}
+
+.trajectory-popup {
+  line-height: 1.45;
+  white-space: nowrap;
+}
+
+.trajectory-popup strong {
+  display: block;
+  margin-bottom: 8px;
+  color: var(--color-heading);
+  font-size: 15px;
+}
+
+.trajectory-popup dl {
+  display: grid;
+  gap: 6px;
+  margin: 0;
+}
+
+.trajectory-popup dl div {
+  display: grid;
+  grid-template-columns: 42px minmax(0, 1fr);
+  gap: 8px;
+  align-items: baseline;
+}
+
+.trajectory-popup dt {
+  color: var(--color-muted);
+  font-size: 12px;
+  letter-spacing: 0;
+  text-transform: none;
+  white-space: nowrap;
+}
+
+.trajectory-popup dd {
+  margin: 0;
+  color: var(--color-heading);
+  font-weight: 700;
+  white-space: nowrap;
+}
+
 .detail-grid {
   display: grid;
   grid-template-columns: 1.2fr 1fr 1fr;