diff --git a/images/matrix-356024_1920.jpg b/images/matrix-356024_1920.jpg
new file mode 100644
index 0000000..abedddd
Binary files /dev/null and b/images/matrix-356024_1920.jpg differ
diff --git a/matrix-356024.jpg b/matrix-356024.jpg
deleted file mode 100644
index 4526ba8..0000000
Binary files a/matrix-356024.jpg and /dev/null differ
diff --git a/style.css b/style.css
index 8d28ed6..528b394 100644
--- a/style.css
+++ b/style.css
@@ -15,7 +15,7 @@ html {
 }
 
 body {
-    background-image: url("./matrix-356024.jpg");
+    background-image: url("./images/matrix-356024_1920.jpg");
     background-size: cover;
     font-family: "Fira Sans", sans-serif;
     display: flex;
@@ -33,7 +33,6 @@ header {
     flex: 0 0 auto;
     padding: 15px 0;
     background-color: var(--dark-trans);
-    margin: 0;
 }
 
 header h1 {
@@ -49,8 +48,6 @@ main {
     flex-direction: column;
     justify-content: center;
     align-items: center;
-    padding: 0;
-    margin: 0;
 }
 
 .calculator {
@@ -64,12 +61,12 @@ main {
     border: 5px solid;
     border-color: #bbb #888 #666 #aaa;
     border-radius: 5px;
+    max-width: 415px;
 }
 
 .display {
     grid-column: 1 / span 4;
     height: 150px;
-    max-width: 415px;
     padding: 5px;
     overflow: hidden;
     background-color: #333;
@@ -99,6 +96,7 @@ button {
     height: 100px;
     width: 100px;
     font-size: 50px;
+    text-align: center;
     border-color: var(--light-text);
     border-radius: 5px;
     box-shadow: 1px 2px 10px 1px #222;