feat(home): add disclaimer modal for board navigation

src/components/disclaimer-modal/disclaimer-modal.module.css

@@ -0,0 +1,102 @@
+.backdrop {
+  position: fixed;
+  top: 0;
+  left: 0;
+  right: 0;
+  bottom: 0;
+  background-color: rgba(128, 128, 128, 0.5);
+  z-index: 999;
+}
+
+.disclaimerDialog {
+  position: absolute;
+  width: 300px;
+  top: 50px;
+  left: 50%;
+  margin-left: -151px;
+  background-color: rgb(255, 255, 255);
+  border: 1px solid rgb(136, 0, 0);
+  color: rgb(136, 0, 0);
+  box-shadow: rgba(0, 0, 0, 0.1) 2px 2px 0px 1px;
+  font-family: arial, helvetica, clean, sans-serif;
+  font-size: 13px;
+  line-height: 16.003px;
+  z-index: 1000;
+}
+
+.hd {
+  background-color: rgb(136, 0, 0);
+  color: rgb(255, 255, 255);
+  padding: 4px 6px;
+  display: flex;
+  justify-content: space-between;
+  align-items: center;
+}
+
+.hd h2 {
+  margin: 0;
+  padding: 0;
+  font-size: 13px;
+  font-weight: bold;
+}
+
+.closeButton {
+  all: unset;
+  cursor: pointer;
+  color: rgb(255, 255, 255);
+  font-size: 16px;
+  line-height: 16px;
+  width: 18px;
+  height: 18px;
+  text-align: center;
+  user-select: none;
+}
+
+.closeButton:hover {
+  opacity: 0.8;
+}
+
+.bd {
+  padding: 10px;
+}
+
+.bd p {
+  margin: 0 0 10px 0;
+}
+
+.bd ol {
+  margin: 0;
+  padding-left: 20px;
+}
+
+.bd li {
+  margin-bottom: 10px;
+}
+
+.bd a {
+  color: rgb(136, 0, 0);
+  text-decoration: underline;
+}
+
+.disclaimerFooter {
+  padding: 10px;
+  display: flex;
+  justify-content: flex-end;
+  gap: 10px;
+  border-top: 1px solid rgb(136, 0, 0);
+}
+
+.disclaimerFooter button {
+  padding: 4px 12px;
+  border: 1px solid rgb(136, 0, 0);
+  background-color: rgb(255, 255, 255);
+  color: rgb(136, 0, 0);
+  cursor: pointer;
+  font-size: 13px;
+  font-family: arial, helvetica, clean, sans-serif;
+}
+
+.disclaimerFooter button:hover {
+  background-color: rgb(250, 250, 250);
+}
+