diff --git a/szamrendszer.css b/szamrendszer.css
new file mode 100644
index 0000000..ccf6f1e
--- /dev/null
+++ b/szamrendszer.css
@@ -0,0 +1,67 @@
+body{
+    background-color: rgb(202, 0, 108);
+    align-items: center;
+    justify-content: center;
+    display: flex;
+    min-height: 800px;
+}
+
+.alap{
+    background-color: rgb(73, 8, 33);
+    width: 400px;
+    padding: 25px;
+    border-radius: 10px;
+}
+
+h1{
+    color: rgb(0, 122, 122);
+    text-align: center;
+}
+
+label{
+    color: rgb(23, 207, 207);
+}
+
+.átváltó{
+    display: flex;
+    flex-direction: column;
+    align-items: center;
+}
+
+.bevitel, .kiszámolt{
+    display: flex;
+    flex-direction: column;
+    align-items: center;
+    margin-bottom: 10px;
+}
+
+input, select{
+    padding: 10px;
+    margin: 5px 0;
+    border: 1px solid #ccc; 
+    border-radius: 5px;
+    font-size: 1em;
+    width: 100%;
+    max-width: 300px;
+    color: rgb(153, 5, 5);
+    font-weight: bolder;
+}
+
+input[readonly] {
+    background-color: #525252; 
+    color: #000000ce;
+}
+
+#felcserélés, #számolás {
+    padding: 10px 20px;
+    border: none;
+    border-radius: 5px;
+    background-color: #2575fc; 
+    color: white;
+    font-size: 1em;
+    cursor: pointer;
+    transition: background-color 0.3s ease;
+    margin: 10px;
+    width: 100%;
+    max-width: 200px;
+}
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