added style for buttons

src/ui/src/assets/css/_forms.scss

@@ -0,0 +1,24 @@
+button {
+	border: none;
+	background: color(scrollbar);
+	color: color(foreground);
+	padding: 0.5rem 2rem;
+	margin: 0.5rem 0;
+	transition: all 0.2s ease-in-out;
+	border-radius: 5px;
+	font-size: 1rem;
+	cursor: pointer;
+
+	&:hover {
+		opacity: 0.8;
+	}
+
+	&:active {
+		box-shadow: 0 0 5px rgba(0,0,0,0.6) inset;
+	}
+
+	svg {
+		margin-right: 0.3rem;
+		vertical-align: middle;
+	}
+}