diff --git a/lessons/images/ps.jpg b/lessons/images/ps.jpg
index 1487aecc..2ce25874 100644
Binary files a/lessons/images/ps.jpg and b/lessons/images/ps.jpg differ
diff --git a/src/layouts/corner-image.svg b/src/layouts/corner-image.svg
index d3bc473e..7e6c26bf 100644
--- a/src/layouts/corner-image.svg
+++ b/src/layouts/corner-image.svg
@@ -1,15 +1 @@
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-  <g id="corner-image-active" clip-path="url(#clip-corner-image-active)">
-    <g id="Corner-image-active-2" data-name="Corner-image-active" transform="translate(-9467 -350)" clip-path="url(#clip-path)">
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diff --git a/src/layouts/github-social.svg b/src/layouts/github-social.svg
index 3fb0f98f..d935eadc 100644
--- a/src/layouts/github-social.svg
+++ b/src/layouts/github-social.svg
@@ -1,16 +1 @@
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-    <clipPath id="clip-github-social">
-      <rect width="32" height="32"/>
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-  </defs>
-  <g id="github-social" clip-path="url(#clip-github-social)">
-    <g id="Group_272" data-name="Group 272" transform="translate(13522.5 -6994)">
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-        <circle cx="16" cy="16" r="15.5" fill="none"/>
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diff --git a/src/layouts/linkedin-social.svg b/src/layouts/linkedin-social.svg
index 4213d6b8..90ef0dee 100644
--- a/src/layouts/linkedin-social.svg
+++ b/src/layouts/linkedin-social.svg
@@ -1,12 +1 @@
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-  <defs>
-    <clipPath id="clip-linkedin-social">
-      <rect width="32" height="32"/>
-    </clipPath>
-  </defs>
-  <g id="linkedin-social" clip-path="url(#clip-linkedin-social)">
-    <g id="Group_270" data-name="Group 270" transform="translate(-86.349 -633.073)">
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-  </g>
-</svg>
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\ No newline at end of file
diff --git a/src/layouts/twitter-social.svg b/src/layouts/twitter-social.svg
index d092b279..ddaa5cb9 100644
--- a/src/layouts/twitter-social.svg
+++ b/src/layouts/twitter-social.svg
@@ -1,12 +1 @@
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-  <defs>
-    <clipPath id="clip-twitter-social">
-      <rect width="40" height="32"/>
-    </clipPath>
-  </defs>
-  <g id="twitter-social" clip-path="url(#clip-twitter-social)">
-    <g id="Group_269" data-name="Group 269" transform="translate(-230.23 -1140.849)">
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-  </g>
-</svg>
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diff --git a/static/algorithms.png b/static/algorithms.png
index ef8375e7..6b661085 100644
Binary files a/static/algorithms.png and b/static/algorithms.png differ
diff --git a/static/corner-image-active.svg b/static/corner-image-active.svg
index 625932f5..e2bd30cd 100644
--- a/static/corner-image-active.svg
+++ b/static/corner-image-active.svg
@@ -1,15 +1 @@
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-  <defs>
-    <clipPath id="clip-path">
-      <rect id="Rectangle_2238" data-name="Rectangle 2238" width="154" height="154" transform="translate(9467 350)" fill="#fff" stroke="#707070" stroke-width="1"/>
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-    <clipPath id="clip-corner-image-active">
-      <rect width="154" height="154"/>
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index 36a50e6d..92e348ba 100644
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