[Style] Update design

@@ -85,8 +85,9 @@ button:disabled {
   z-index: 1000;
   top: calc(100% + 5px);
   left: 20px;
-  background: rgb(246, 246, 246);
-  border: solid thin black;
+  background: rgb(250, 250, 250);
+  box-shadow: 0px 0px 5px gray;
+  border: solid thin grey;
   border-radius: 5px;
   display: none;
   padding: 10px;
@@ -97,15 +98,28 @@ button:disabled {
 .spl {
   display: flex;
   flex-direction: column;
+  align-items: flex-start;
 }
 
 .spl > * {
+  margin-bottom: 3px;
+}
+
+.spl > :nth-child(1) {
   margin-bottom: 5px;
+  font-size: large;
+}
+
+.spl > :nth-child(2) {
+  font-size: medium;
 }
 
 .spl > div {
+  margin-top: 5px;
+  font-size: small;
   background-color: white;
   border: solid 1px rgb(235, 235, 235);
+  width: calc(100% - 2px);
 }
 
 .spc {

@@ -35,9 +35,11 @@ aside {
   /* height: 150px;
   width: 250px; */
   /* transform: translate(-50%, -50%); */
-  background: rgb(246, 246, 246);
+  background: rgb(250, 250, 250);
+  box-shadow: 0px 0px 5px gray;
+  border: solid thin grey;
+  border-radius: 5px;
   display: none;
-  border: solid thin black;
   padding: 5px;
 }