diff --git a/submissions/sinchUK/HTML-CSS-Popup/index.html b/submissions/sinchUK/HTML-CSS-Popup/index.html
new file mode 100644
index 0000000000..125002468e
--- /dev/null
+++ b/submissions/sinchUK/HTML-CSS-Popup/index.html
@@ -0,0 +1,204 @@
+
+
+
+
+
+
+
+
+
+
+ Popup
+
+
+
+
+
diff --git a/submissions/sinchUK/HTML-CSS-Popup/styles.css b/submissions/sinchUK/HTML-CSS-Popup/styles.css
new file mode 100644
index 0000000000..2e904ecec4
--- /dev/null
+++ b/submissions/sinchUK/HTML-CSS-Popup/styles.css
@@ -0,0 +1,204 @@
+body {
+ font-size: 14px;
+ font-family: 'Roboto', sans-serif;
+ box-sizing: border-box;
+}
+ /** HEADER **/
+::-webkit-scrollbar {
+ width: 15px;
+ fill: #757575;
+ background: #f5f5f5;
+}
+::-webkit-scrollbar-thumb {
+ background: #c1c1c1;
+}
+.menu-items {
+ display: flex;
+ flex-direction: row;
+ justify-content: flex-end;
+ align-items: center;
+ padding: 2px;
+ height: 30px;
+}
+.menu-item {
+ border: 2px solid transparent;
+ margin: 0px 15px;
+ list-style: none;
+ padding: 3px 3px 0px;
+}
+.menu-item a:focus-visible, .menu-item img:focus-visible, .menu-item input:focus-visible {
+ outline: 2px solid #a6c8ff;
+ border-radius: 1px;
+}
+.menu-item a {
+ text-decoration: none;
+ color: #757575;
+}
+.menu-item-img {
+ box-sizing: border-box;
+ width: 25px;
+}
+.tooltip {
+ text-align: left;
+ position: absolute;
+ top: 65px;
+ width: 320px;
+ height: 475px;
+ overflow-x: hidden;
+ z-index: 1;
+ box-shadow: rgba(14, 30, 37, 0.12) 0px 2px 4px 0px, rgba(14, 30, 37, 0.32) 0px 2px 16px 0px;
+ transition: height 0.3s ease-in-out 0s;
+ right: 95px;
+ max-height: calc(-65px + 100vh);
+ visibility: hidden;
+}
+.menu-item__input {
+ width: 17px;
+ position: absolute;
+ height: 17px;
+ appearance: none;
+ top: 19px;
+}
+.menu-item__input:focus ~.menu-item {
+ border: 2px solid #a6c8ff;
+ border-radius: 3px;
+}
+.menu-item__input:checked ~.tooltip {
+ visibility: visible;
+ opacity: 1;
+}
+.menu-item__inner .tooltip::before {
+ content: "";
+ position: absolute;
+ bottom: 100%;
+ left: 80%;
+ margin-left: -7px;
+ border:10px solid #000;
+ border-color: transparent transparent white transparent;
+}
+.tooltip-items {
+ padding: 50px 20px 10px;
+ display: flex;
+ flex-direction: row;
+ flex-wrap: wrap;
+ justify-content: space-between;
+}
+.tooltip-item {
+ width: 80px;
+ height: 80px;
+ margin-bottom: 15px;
+}
+.tooltip-item:hover {
+ border: 1px solid lightgray;
+ box-sizing: border-box;
+}
+.tooltip-item:focus {
+ border: 1px solid lightblue;
+ box-sizing: border-box;
+}
+.tooltip-item a {
+ width: 100%;
+ height: 100%;
+ display: flex;
+ flex-direction: column;
+ flex-wrap: wrap;
+ list-style: none;
+ text-decoration: none;
+ align-items: center;
+ justify-content: space-between;
+}
+.tooltip-item .width-30 {
+ width: 30px;
+}
+.tooltip-item .width-65 {
+ width: 65px;
+}
+.tooltip-more-box {
+ display: none;
+ flex-wrap: wrap;
+}
+.tooltip-more-btn {
+ width: 100%;
+ display: flex;
+ justify-content: center;
+ align-items: center;
+ height: 35px;
+ background-color: #f5f5f5;
+}
+.tooltip-more__input {
+ position: absolute;
+ width: 100%;
+ height: 35px;
+ appearance: none;
+ margin: 0px;
+}
+.tooltip-more {
+ width: 100%;
+ display: flex;
+ padding: 10px 20px;
+ justify-content: space-between;
+ flex-wrap: wrap;
+}
+.tooltip-more__input:checked ~.tooltip-more-box {
+ display: flex;
+ justify-content: space-between;
+}
+.tooltip-more__input:checked +.tooltip-more-btn {
+ display: none;
+}
+.hidden {
+ display: none;
+}
+.tooltip-more__input:checked ~ .more-btn {
+ display: flex;
+ background-color: transparent;
+}
+.tooltip-more__input:checked {
+ display: block;
+}
+::-webkit-scrollbar {
+ width: 18px;
+ height: 18px;
+}
+::-webkit-scrollbar-track {
+ background-color: #f1f1f1;
+}
+::-webkit-scrollbar-thumb {
+ background-color: #c1c1c1;
+ background-clip: padding-box;
+ border: 2px solid transparent;
+}
+::-webkit-scrollbar-thumb:hover {
+ background-color: rgb(168, 166, 166);
+}
+::-webkit-scrollbar-thumb:active {
+ background-color: rgb(148, 146, 146);
+}
+ /* Buttons */
+::-webkit-scrollbar-button:single-button {
+ display: block;
+ height: 13px;
+ width: 16px;
+ background-size: 10px;
+ background-repeat: no-repeat;
+}
+/* Up */
+::-webkit-scrollbar-button:single-button:vertical:decrement {
+ height: 12px;
+ width: 16px;
+ background-position: center 4px;
+ background-image: url("data:image/svg+xml;utf8,");
+}
+/* Down */
+::-webkit-scrollbar-button:single-button:vertical:increment {
+ height: 12px;
+ width: 16px;
+ background-position: center 2px;
+ background-image: url("data:image/svg+xml;utf8,");
+}
+@media only screen and (max-width: 768px) {
+ .tooltip {
+ right: 15px;
+ width: 300px;
+ }
+}