feat: align website style with www.rust-lang.org/ for consistency

Signed-off-by: Rustin170506 <[email protected]>

www/rustup.css

@@ -51,12 +51,13 @@ body#idx #pitch > a {
 }
 
 a {
-    color: #428bca;
-    text-decoration: none;
+    color: #0b7261;
+    text-decoration: underline;
 }
 
 a:hover {
-    color: rgb(42, 100, 150);
+    color: #0d8b75;
+    text-decoration: underline;
 }
 
 body#idx > * {
@@ -71,8 +72,12 @@ body#idx > #pitch {
 }
 
 #pitch em {
+    background-color: #ffc832;
+    color: black;
     font-style: normal;
-    font-weight: 400;
+    font-size: 2.25rem;
+    font-weight: 500;
+    letter-spacing: 1px;
 }
 
 body#idx p {
@@ -82,10 +87,15 @@ body#idx p {
 
 body#idx p.other-platforms-help {
     font-size: 0.6em;
+    a {
+        color: white;
+        text-decoration: underline;
+    }
 }
 
 .instructions {
-    background-color: rgb(250, 250, 250);
+    background-color: #0b7261;
+    color: white;
     margin-left: auto;
     margin-right: auto;
     text-align: center;
@@ -100,7 +110,13 @@ body#idx p.other-platforms-help {
     margin-right: auto;
 }
 
+.instructions > a {
+    color: white;
+    text-decoration: underline;
+}
+
 hr {
+    border-color: #0b7261;
     margin-top: 2em;
     margin-bottom: 2em;
 }
@@ -115,13 +131,12 @@ hr {
 }
 
 .rustup-command::before {
-    color: #999;
+    color: white;
     content: " $ ";
 	margin-left: 15px;
 }
 
 .rustup-command {
-    background-color: #515151;
     color: white;
     padding: 1rem 1rem 1rem 0;
     width: 45rem;
@@ -183,7 +198,7 @@ hr {
     transition: opacity 0.2s ease-in-out;
     opacity: 0;
     font-size: 10px;
-    color: green;
+    color: #0b7261;
     width: 41px;
     height: 15px;
     position: relative;
@@ -201,6 +216,7 @@ hr {
     font-family: "Work Sans", "Fira Sans","Helvetica Neue",Helvetica,Arial,sans-serif;
     font-weight: 500;
     letter-spacing: 0.1rem;
+    color: white;
 }
 
 /* This is the box that prints navigator.platform, navigator.appVersion values */