Add typo detector & update some dependencies

src/css/App.css

@@ -169,7 +169,7 @@ button:focus-visible, a:focus-visible {
 }
 
 input {
-	border-top: none;
+  border-top: none;
 	border-right: none;
 	border-left: none;
 	border-bottom: 2px solid var(--overlay-color);
@@ -177,6 +177,7 @@ input {
 	color: var(--text-color);
 	font: inherit;
   min-width: 100px;
+  width: 0;
 }
 
 input:focus {
@@ -390,6 +391,10 @@ label .MuiIconButton-label > input {
 	margin-left: 12px;
 }
 
+.hide {
+  visibility: hidden;
+}
+
 @media screen and (max-width: 420px) {
   .progress-history-container > div > *:nth-child(2), .progress-history-container--complete > div > *:nth-last-child(3), .progress-history-container--incomplete > div > *:nth-last-child(4) {
     display: none;

src/css/Form.css

@@ -58,5 +58,4 @@
 
 input[type=text].set-title-input {
 	flex: 1;
-	width: 0;
 }

src/css/Progress.css

@@ -16,11 +16,11 @@
 	caret-color: transparent;
 }
 
-input.answer-input--correct {
+.answer--correct {
 	color: #3ac535;
 }
 
-input.answer-input--incorrect {
+.answer--incorrect {
 	color: #ff5252;
 }