diff --git a/src/room/PTTButton.module.css b/src/room/PTTButton.module.css
index 6dfca60..61dd719 100644
--- a/src/room/PTTButton.module.css
+++ b/src/room/PTTButton.module.css
@@ -1,5 +1,5 @@
 .pttButton {
-  height: 100%;
+  height: 100vh;
   aspect-ratio: 1;
   max-height: 232px;
   max-width: 232px;
diff --git a/src/room/PTTCallView.module.css b/src/room/PTTCallView.module.css
index d4b01e7..76ef699 100644
--- a/src/room/PTTCallView.module.css
+++ b/src/room/PTTCallView.module.css
@@ -41,6 +41,7 @@
 
 .talkingInfo {
   display: flex;
+  flex-shrink: 0;
   flex-direction: column;
   align-items: center;
   margin-bottom: 20px;