diff --git a/gui/index.html b/gui/index.html
index 7ccb21b..27d5381 100644
--- a/gui/index.html
+++ b/gui/index.html
@@ -6,7 +6,6 @@
     <meta http-equiv="X-UA-Compatible" content="IE=edge">
     <meta name="viewport" content="width=device-width, initial-scale=1.0">
     <link rel="shortcut icon" href="favicon.ico" type="image/x-icon">
-    <link rel="stylesheet" href="simple.css">
     <script src="main.js"></script>
     <title>Тестирование</title>
 </head>
diff --git a/gui/simple.css b/gui/simple.css
deleted file mode 100644
index 02e9d5e..0000000
--- a/gui/simple.css
+++ /dev/null
@@ -1,627 +0,0 @@
-/* Global variables. */
-:root {
-  /* Set sans-serif & mono fonts */
-  --sans-font: -apple-system, BlinkMacSystemFont, "Avenir Next", Avenir,
-    "Nimbus Sans L", Roboto, "Noto Sans", "Segoe UI", Arial, Helvetica,
-    "Helvetica Neue", sans-serif;
-  --mono-font: Consolas, Menlo, Monaco, "Andale Mono", "Ubuntu Mono", monospace;
-
-  /* Default (light) theme */
-  --bg: #fff;
-  --accent-bg: #f5f7ff;
-  --text: #212121;
-  --text-light: #585858;
-  --border: #d8dae1;
-  --accent: #0d47a1;
-  --code: #d81b60;
-  --preformatted: #444;
-  --marked: #ffdd33;
-  --disabled: #efefef;
-}
-
-/* Dark theme */
-@media (prefers-color-scheme: dark) {
-  :root {
-    color-scheme: dark;
-    --bg: #212121;
-    --accent-bg: #2b2b2b;
-    --text: #dcdcdc;
-    --text-light: #ababab;
-    --border: #666;
-    --accent: #ffb300;
-    --code: #f06292;
-    --preformatted: #ccc;
-    --disabled: #111;
-  }
-  /* Add a bit of transparency so light media isn't so glaring in dark mode */
-  img,
-  video {
-    opacity: 0.8;
-  }
-}
-
-/* Reset box-sizing */
-*, *::before, *::after {
-  box-sizing: border-box;
-}
-
-/* Reset default appearance */
-textarea,
-select,
-input,
-progress {
-  appearance: none;
-  -webkit-appearance: none;
-  -moz-appearance: none;
-}
-
-html {
-  /* Set the font globally */
-  font-family: var(--sans-font);
-  scroll-behavior: smooth;
-}
-
-/* Make the body a nice central block */
-body {
-  color: var(--text);
-  background-color: var(--bg);
-  font-size: 1.15rem;
-  line-height: 1.5;
-  display: grid;
-  grid-template-columns: 1fr min(45rem, 90%) 1fr;
-  margin: 0;
-}
-body > * {
-  grid-column: 2;
-}
-
-/* Make the header bg full width, but the content inline with body */
-body > header {
-  background-color: var(--accent-bg);
-  border-bottom: 1px solid var(--border);
-  text-align: center;
-  padding: 0 0.5rem 2rem 0.5rem;
-  grid-column: 1 / -1;
-}
-
-body > header h1 {
-  max-width: 1200px;
-  margin: 1rem auto;
-}
-
-body > header p {
-  max-width: 40rem;
-  margin: 1rem auto;
-}
-
-/* Add a little padding to ensure spacing is correct between content and header > nav */
-main {
-  padding-top: 1.5rem;
-}
-
-body > footer {
-  margin-top: 4rem;
-  padding: 2rem 1rem 1.5rem 1rem;
-  color: var(--text-light);
-  font-size: 0.9rem;
-  text-align: center;
-  border-top: 1px solid var(--border);
-}
-
-/* Format headers */
-h1 {
-  font-size: 3rem;
-}
-
-h2 {
-  font-size: 2.6rem;
-  margin-top: 3rem;
-}
-
-h3 {
-  font-size: 2rem;
-  margin-top: 3rem;
-}
-
-h4 {
-  font-size: 1.44rem;
-}
-
-h5 {
-  font-size: 1.15rem;
-}
-
-h6 {
-  font-size: 0.96rem;
-}
-
-/* Prevent long strings from overflowing container */
-p, h1, h2, h3, h4, h5, h6 {
-  overflow-wrap: break-word;
-}
-
-/* Fix line height when title wraps */
-h1,
-h2,
-h3 {
-  line-height: 1.1;
-}
-
-/* Reduce header size on mobile */
-@media only screen and (max-width: 720px) {
-  h1 {
-    font-size: 2.5rem;
-  }
-
-  h2 {
-    font-size: 2.1rem;
-  }
-
-  h3 {
-    font-size: 1.75rem;
-  }
-
-  h4 {
-    font-size: 1.25rem;
-  }
-}
-
-/* Format links & buttons */
-a,
-a:visited {
-  color: var(--accent);
-}
-
-a:hover {
-  text-decoration: none;
-}
-
-button,
-[role="button"],
-input[type="submit"],
-input[type="reset"],
-input[type="button"],
-label[type="button"] {
-  border: none;
-  border-radius: 5px;
-  background-color: var(--accent);
-  font-size: 1rem;
-  color: var(--bg);
-  padding: 0.7rem 0.9rem;
-  margin: 0.5rem 0;
-}
-
-button[disabled],
-[role="button"][aria-disabled="true"],
-input[type="submit"][disabled],
-input[type="reset"][disabled],
-input[type="button"][disabled],
-input[type="checkbox"][disabled],
-input[type="radio"][disabled],
-select[disabled] {
-  opacity: 0.5;
-  cursor: not-allowed;
-}
-
-input:disabled,
-textarea:disabled,
-select:disabled {
-  cursor: not-allowed;
-  background-color: var(--disabled);
-}
-
-input[type="range"] {
-  padding: 0;
-}
-
-/* Set the cursor to '?' while hovering over an abbreviation */
-abbr {
-  cursor: help;
-}
-
-button:focus,
-button:enabled:hover,
-[role="button"]:focus,
-[role="button"]:not([aria-disabled="true"]):hover,
-input[type="submit"]:focus,
-input[type="submit"]:enabled:hover,
-input[type="reset"]:focus,
-input[type="reset"]:enabled:hover,
-input[type="button"]:focus,
-input[type="button"]:enabled:hover,
-label[type="button"]:focus,
-label[type="button"]:hover {
-  filter: brightness(1.4);
-  cursor: pointer;
-}
-
-/* Format navigation */
-header > nav {
-  font-size: 1rem;
-  line-height: 2;
-  padding: 1rem 0 0 0;
-}
-
-/* Use flexbox to allow items to wrap, as needed */
-header > nav ul,
-header > nav ol {
-  align-content: space-around;
-  align-items: center;
-  display: flex;
-  flex-direction: row;
-  flex-wrap: wrap;
-  justify-content: center;
-  list-style-type: none;
-  margin: 0;
-  padding: 0;
-}
-
-/* List items are inline elements, make them behave more like blocks */
-header > nav ul li,
-header > nav ol li {
-  display: inline-block;
-}
-
-header > nav a,
-header > nav a:visited {
-  margin: 0 0.5rem 1rem 0.5rem;
-  border: 1px solid var(--border);
-  border-radius: 5px;
-  color: var(--text);
-  display: inline-block;
-  padding: 0.1rem 1rem;
-  text-decoration: none;
-}
-
-header > nav a:hover {
-  filter: brightness(1.4);
-  cursor: pointer;
-}
-
-/* Reduce nav side on mobile */
-@media only screen and (max-width: 720px) {
-  header > nav a {
-    border: none;
-    padding: 0;
-    text-decoration: underline;
-    line-height: 1;
-  }
-}
-
-/* Consolidate box styling */
-aside, details, pre, progress {
-  background-color: var(--accent-bg);
-  border: 1px solid var(--border);
-  border-radius: 5px;
-  margin-bottom: 1rem;
-}
-
-aside {
-  font-size: 1rem;
-  width: 30%;
-  padding: 0 15px;
-  margin-left: 15px;
-  float: right;
-}
-
-/* Make aside full-width on mobile */
-@media only screen and (max-width: 720px) {
-  aside {
-    width: 100%;
-    float: none;
-    margin-left: 0;
-  }
-}
-
-article, fieldset {
-  border: 1px solid var(--border);
-  padding: 1rem;
-  border-radius: 5px;
-  margin-bottom: 1rem;
-}
-
-article h2:first-child,
-section h2:first-child {
-  margin-top: 1rem;
-}
-
-section {
-  border-top: 1px solid var(--border);
-  border-bottom: 1px solid var(--border);
-  padding: 2rem 1rem;
-  margin: 3rem 0;
-}
-
-/* Don't double separators when chaining sections */
-section + section,
-section:first-child {
-  border-top: 0;
-  padding-top: 0;
-}
-
-section:last-child {
-  border-bottom: 0;
-  padding-bottom: 0;
-}
-
-details {
-  padding: 0.7rem 1rem;
-}
-
-summary {
-  cursor: pointer;
-  font-weight: bold;
-  padding: 0.7rem 1rem;
-  margin: -0.7rem -1rem;
-  word-break: break-all;
-}
-
-details[open] summary + * {
-  margin-top: 0;
-}
-
-details[open] summary {
-  margin-bottom: 0.5rem;
-}
-
-details[open] > :last-child {
-  margin-bottom: 0;
-}
-
-/* Format tables */
-table {
-  border-collapse: collapse;
-  display: block;
-  margin: 1.5rem 0;
-  overflow: auto;
-  width: 100%;
-}
-
-td,
-th {
-  border: 1px solid var(--border);
-  text-align: left;
-  padding: 0.5rem;
-}
-
-th {
-  background-color: var(--accent-bg);
-  font-weight: bold;
-}
-
-tr:nth-child(even) {
-  /* Set every other cell slightly darker. Improves readability. */
-  background-color: var(--accent-bg);
-}
-
-table caption {
-  font-weight: bold;
-  margin-bottom: 0.5rem;
-}
-
-/* Format forms */
-textarea,
-select,
-input {
-  font-size: inherit;
-  font-family: inherit;
-  padding: 0.5rem;
-  margin-bottom: 0.5rem;
-  color: var(--text);
-  background-color: var(--bg);
-  border: 1px solid var(--border);
-  border-radius: 5px;
-  box-shadow: none;
-  max-width: 100%;
-  display: inline-block;
-}
-label {
-  display: block;
-}
-textarea:not([cols]) {
-  width: 100%;
-}
-
-/* Add arrow to drop-down */
-select:not([multiple]) {
-  background-image: linear-gradient(45deg, transparent 49%, var(--text) 51%),
-    linear-gradient(135deg, var(--text) 51%, transparent 49%);
-  background-position: calc(100% - 15px), calc(100% - 10px);
-  background-size: 5px 5px, 5px 5px;
-  background-repeat: no-repeat;
-  padding-right: 25px;
-}
-
-/* checkbox and radio button style */
-input[type="checkbox"],
-input[type="radio"] {
-  vertical-align: middle;
-  position: relative;
-}
-
-input[type="radio"] {
-  border-radius: 100%;
-}
-
-input[type="checkbox"]:checked,
-input[type="radio"]:checked {
-  background-color: var(--accent);
-}
-
-input[type="checkbox"]:checked::after {
-  /* Creates a rectangle with colored right and bottom borders which is rotated to look like a check mark */
-  content: " ";
-  width: 0.18em;
-  height: 0.32em;
-  border-radius: 0;
-  position: absolute;
-  top: 0.05em;
-  left: 0.17em;
-  background-color: transparent;
-  border-right: solid var(--bg) 0.08em;
-  border-bottom: solid var(--bg) 0.08em;
-  font-size: 1.8em;
-  transform: rotate(45deg);
-}
-input[type="radio"]:checked::after {
-  /* creates a colored circle for the checked radio button  */
-  content: " ";
-  width: 0.25em;
-  height: 0.25em;
-  border-radius: 100%;
-  position: absolute;
-  top: 0.125em;
-  background-color: var(--bg);
-  left: 0.125em;
-  font-size: 32px;
-}
-
-/* Makes input fields wider on smaller screens */
-@media only screen and (max-width: 720px) {
-  textarea,
-  select,
-  input {
-    width: 100%;
-  }
-}
-
-/* Ensures the checkbox and radio inputs do not have a set width like other input fields */
-input[type="checkbox"],
-input[type="radio"] {
-  width: auto;
-}
-
-/* Set a height for color input */
-input[type="color"] {
-  height: 2.5rem;
-  padding:  0.2rem;
-}
-
-/* do not show border around file selector button */
-input[type="file"] {
-  border: 0;
-}
-
-/* Misc body elements */
-hr {
-  color: var(--border);
-  border-top: 1px;
-  margin: 1rem auto;
-}
-
-mark {
-  padding: 2px 5px;
-  border-radius: 4px;
-  background-color: var(--marked);
-}
-
-img,
-video {
-  max-width: 100%;
-  height: auto;
-  border-radius: 5px;
-}
-
-figure {
-  margin: 0;
-  text-align: center;
-}
-
-figcaption {
-  font-size: 0.9rem;
-  color: var(--text-light);
-  margin-bottom: 1rem;
-}
-
-blockquote {
-  margin: 2rem 0 2rem 2rem;
-  padding: 0.4rem 0.8rem;
-  border-left: 0.35rem solid var(--accent);
-  color: var(--text-light);
-  font-style: italic;
-}
-
-cite {
-  font-size: 0.9rem;
-  color: var(--text-light);
-  font-style: normal;
-}
-
-dl {
-  display: grid;
-  grid-template-columns: auto 1fr;
-}
-
-dl dt {
-  grid-column-start: 1;
-  color: var(--text-light);
-}
-
-dl dd {
-  grid-column-start: 2;
-}
-
-/* Use mono font for code elements */
-code,
-pre,
-pre span,
-kbd,
-samp {
-  font-family: var(--mono-font);
-  color: var(--code);
-}
-
-kbd {
-  color: var(--preformatted);
-  border: 1px solid var(--preformatted);
-  border-bottom: 3px solid var(--preformatted);
-  border-radius: 5px;
-  padding: 0.1rem 0.4rem;
-}
-
-pre {
-  padding: 1rem 1.4rem;
-  max-width: 100%;
-  overflow: auto;
-  color: var(--preformatted);
-}
-
-/* Fix embedded code within pre */
-pre code {
-  color: var(--preformatted);
-  background: none;
-  margin: 0;
-  padding: 0;
-}
-
-/* Progress bars */
-/* Declarations are repeated because you */
-/* cannot combine vendor-specific selectors */
-progress {
-  width: 100%;
-}
-
-progress:indeterminate {
-  background-color: var(--accent-bg);
-}
-
-progress::-webkit-progress-bar {
-  border-radius: 5px;
-  background-color: var(--accent-bg);
-}
-
-progress::-webkit-progress-value {
-  border-radius: 5px;
-  background-color: var(--accent);
-}
-
-progress::-moz-progress-bar {
-  border-radius: 5px;
-  background-color: var(--accent);
-  transition-property: width;
-  transition-duration: 0.3s;
-}
-
-progress:indeterminate::-moz-progress-bar {
-  background-color: var(--accent-bg);
-}