diff --git a/public/sass/bootstrap-overrides/_buttons.scss b/public/sass/bootstrap-overrides/_buttons.scss
new file mode 100644
index 0000000..dbd247f
--- /dev/null
+++ b/public/sass/bootstrap-overrides/_buttons.scss
@@ -0,0 +1,102 @@
+// Button style
+%icon-general-style {
+  content: '';
+  height: 1.2em;
+  width: 1.5em;
+  display: inline-block;
+}
+
+%table-info-icon-for-popup {
+  height: 1.2em;
+  width: 1.2em;
+  border: solid 0.8px $white;
+  filter: grayscale(1) brightness(88%) contrast(2);
+  &:focus,
+  &:hover {
+    border: solid 0.8px $white;
+    outline: 0;
+    filter: grayscale(1) brightness(90%) contrast(2);
+  }
+}
+
+@layer kth-style.old {
+  .external-link::after {
+    @extend %icon-general-style;
+    height: 1.25rem;
+    width: 1.3rem;
+    background: $data-open-window-blue-svg no-repeat;
+    background-size: 1.25rem 1.25rem;
+    margin: 0 0 -4px 10px;
+  }
+
+  .pdf-link {
+    margin: 0;
+    @media (min-width: 768px) {
+      margin: 0 1.5em 0 1em;
+    }
+    &:before {
+      @extend %icon-general-style;
+      background: $data-pdf-blue-svg no-repeat;
+      height: 1.25rem;
+      margin: 0 0.625rem 0.3rem 0;
+      width: 1rem;
+      vertical-align: middle;
+    }
+  }
+
+  .pdf-post-link {
+    margin: 0;
+
+    &:after {
+      @extend %icon-general-style;
+      background: $data-pdf-blue-svg no-repeat;
+      height: 1.25rem;
+      width: 1rem;
+      margin: 0 0 0.3rem 0.625em;
+      vertical-align: middle;
+    }
+  }
+
+  .btn-info-modal {
+    //change secondary to primary
+    background: $data-open-modal-blue-svg no-repeat;
+    background-color: transparent;
+    background-size: contain;
+    border: transparent;
+    border-radius: 0.8em;
+    margin-left: 1em;
+    width: 1.3em;
+    height: 1.3em;
+    padding: 0;
+    vertical-align: baseline;
+  }
+
+  th > button.btn-info-modal,
+  td > button.btn-info-modal,
+  td > span > button.btn-info-modal {
+    @extend %table-info-icon-for-popup;
+    margin-left: 0;
+    vertical-align: middle;
+  }
+
+  .btn-upload-file {
+    //FileInput in kth-style-react-components
+    display: flex;
+    flex-direction: column;
+    input[type='file'] {
+      filter: alpha(opacity=0);
+      opacity: 0;
+      border: 0;
+    }
+    span {
+      margin: 0;
+      &::after {
+        @extend %icon-general-style;
+        vertical-align: bottom;
+        background: $data-upload-blue-svg no-repeat;
+        background-size: 1em;
+        float: right;
+      }
+    }
+  }
+}
diff --git a/public/sass/kth-bootstrap.scss b/public/sass/kth-bootstrap.scss
index 2754794..254dfaf 100644
--- a/public/sass/kth-bootstrap.scss
+++ b/public/sass/kth-bootstrap.scss
@@ -60,6 +60,7 @@
 @import 'bootstrap-overrides/modals';
 @import 'bootstrap-overrides/popover';
 @import 'bootstrap-overrides/nav';
+@import 'bootstrap-overrides/buttons';
 @import 'bootstrap-overrides/tables';
 @import 'bootstrap-overrides/forms';