Improve composer visiblity (#8578)

Co-authored-by: Michael Telatynski <7t3chguy@gmail.com>

res/css/views/rooms/_SendMessageComposer.scss

@@ -30,14 +30,8 @@ limitations under the License.
         flex: 1;
         display: flex;
         flex-direction: column;
-        // min-height at this level so the mx_BasicMessageComposer_input
-        // still stays vertically centered when less than 55px.
-        // We also set this to ensure the voice message recording widget
-        // doesn't cause a jump.
-        min-height: 55px;
 
         .mx_BasicMessageComposer_input {
-            padding: 3px 0;
             // this will center the contenteditable
             // in it's parent vertically
             // while keeping the autocomplete at the top