style.css

#desktop, #mobile {
  display: none;
}

body {
  margin: 0;
  font-family: 'Varela Round', sans-serif;
}

body, #main, html, .mobile-menu {
  background-color: #d3d3d3; /* light gray */
}

h1 {
  color: #888;
  margin-left: 4px;
  font-size: 115%;
}

h4 {
  margin-top: 0;
}

h5 {
  margin-left: 32px;
  margin-top: -10px
}

content, header {
  display: flex;
}

header {
  flex-direction: column;
}

.title {
  display: flex;
  align-items: center;
  margin-left: 0.5em;
}

button {
  outline: none;
}

.logo > img {
  border-radius: 50%;
}

.btn {
  border: 0;
  border-radius: 4px;
  color: white;
  text-align: center;
  text-decoration: none;
  display: inline-block;
  font-size: 14pt;
  width: 97%;
}

.mobile-btn-row {
  padding: 0 0.75rem;
  display: flex;
  justify-content: space-between;
}

.mobile-btn-row.row-center {
  justify-content: space-around;
}

.mobile-btn-row.row1 > a,
.mobile-btn-row.row2 > a {
  width: 49%;
}

.btn-mobile,
.btn-undo-mobile,
.btn-redo-mobile {
  background-color: #c5c5c5;
  border-color: #b1b1b1;
  padding: 2px;
  color: #666;
  margin-top: 8px;
  margin-bottom: 3px;
  box-shadow: 1px 1px 1px 0 #888;
  height: 3rem;
}

.wrapper {
  box-sizing: border-box;
}

#desktop-canvas {
  cursor: url('cursor-pencil.png'), cell;
  box-shadow: 1px 1px 6px #888;
}

#mobile-canvas {
  margin-top: 15px;
  margin-left: 15px;
  box-shadow: 1px 1px 1px 0 #888;
}

.btn-desktop {
  box-shadow: 2px 2px 20px #666;
  width: 4.5em;
  margin-left: 3.5rem;
  /* background-image: linear-gradient(45deg,#1da1f2,#196da0,#3b5998);
  background-color: #3b5998; */
  /* transition: 0.3s; */
}

/* .btn-desktop:hover {
  background-image: linear-gradient(45deg,#3b5998,#1da1f2,#196da0);
  background-color: #3b5998;
} */

.btn-primary {
  background-image: linear-gradient(45deg,#2a842a,#7ef77e);
  background-color: #5cb85c;
}

.btn-primary:hover {
  background: linear-gradient(90deg,#5cb85c,#38ff38,#2a842a);
  background-color: #4a9b4a;
}

.btn-print {
  background-image: linear-gradient(45deg,#ffa919,#b7770c);
  background-color: #e0a541;
}

.btn-print:hover {
  background: linear-gradient(90deg,#b7770c,#ffa919,#c19241);
  background-color: #e0a541;
}

.btn-danger {
  background-image: linear-gradient(45deg,#751512,#f44c46);
  background-color: #d9534f;
}

.btn-danger:hover {
  background: linear-gradient(90deg,#963b39,#e83a35,#751512);
  background-color: #bc4340;
}

.mobile-btn-row > .btn-download > button,
.mobile-btn-row > .btn-clear > button,
.mobile-btn-row > .btn-undo > button,
.mobile-btn-row > .btn-redo > button {
  border-radius: 50%;
  width: 3rem;
  height: 3rem;
  color: #333;
}


.btn-primary-mobile {
  background-color: #88a184;  /* green */
}

.btn-danger-mobile {
  background-color: #a67676; /* red */
}

.social {
  display: flex;
  margin-right: -2px;
  margin-top: 1rem;
  text-align: center;
}

.sidenav {
  height: 100%;
  position: fixed;
  z-index: 1; /* Show social buttons */
  top: 0.5em;
}

.leftnav {
  width: 10rem;
}

.lower-buttons {
  margin-top: 10px;
  bottom: 10px;
  display: flex;
}

.btn-desktop.btn-primary,
.btn-desktop.btn-print,
.btn-desktop.btn-danger {
  border-radius: 50%;
  width: 2em;
  height: 2em;
  padding: 0;
  margin: 0;
}

.btn-desktop > i {
  text-align: center;
}

.rightnav {
  width: 10rem;
  right: 0;
  padding-top: 0.5rem;
}

.rightnav > div {
  text-align: center;
}

.fb-like a {
  text-decoration: none;
}

.leftnav a {
  padding: 0.25rem 0.5rem;
  text-decoration: none;
  font-size: 120%;
  display: block;
  transition: 0.4s;
}

/**
* Color of text buttons
*/
.leftnav a {
   color: #666;
 }
.leftnav a:hover, .offcanvas a:focus {
    color: #999;
}

.icon-holder a:hover {
  color: #666;
}

#main {
  transition: margin-left 0.5s;
  padding-left: 13.5rem;
  padding-top: 0.5rem;
}

.social-links {
  text-align: center;
}

.fb_iframe_widget {
  display: block !important;
  margin-bottom: 10px;
}

.content-box {
  padding: 12px;
  margin: 0em 0.5em 1em -2em;
  background: #f1f1f1;
  color: #888;
}

.fb-group {
  padding-bottom: 1px;
}

.icon-holder-mobile {
  position: inherit;
  bottom: 10px;
  transform: none;
}

.icon-holder a {
  transition: 0.5s;
  color: #222;
  margin-left: 5px;
  padding: 0.25rem;
}

.icon-holder-mobile a {
  padding: 0 0.35rem;
  color: #010101;
}

.line-width, .rotations-num, input[type=checkbox]{
  background-color: #eee;
}

input {
  text-align: center;
  font-size: 12pt;
}

input[type=checkbox] {
  width: 18px;
  height: 18px;
}

input[type=image]{
  box-shadow: 1px 1px 1px #888;
  border-radius: 15px;
}

@media only screen and (max-width: 600px) {
  input[type=image] {
    margin-top: 4px;
    margin-bottom: 4px;
  }
}

.line-width, .selectionPalette, .rotations-num {
  width: 2.75rem;
  height: 1.75rem;
  border: solid 1px #91765d;
}

.line-width:hover, .rotations-num:hover {
  border-color: #F0C49B;
}

#btn-clear {
  color: #a31a1a;
}

#btn-clear:hover {
  color: #f21f1f;
}

#btn-color-desk, #btn-line-width, #btn-num-rot, #btn-flip-switch {
  font-size: 100%;
}

.grid2x2 > div {
  display: flex;
  justify-content: center;
  flex-direction: column;
}

.grid2x2 > div > div {
  display: flex;
  justify-content: center;
  flex-direction: column;
}

.top-buttons {
  margin-bottom: 1.75em;
}

.box {
  text-align: center;
  margin: 10px;
  background-color: #ddd;
  border-radius: 3px;
  box-shadow: 1px 1px 8px #666;
  background-image: linear-gradient(45deg,#ccc,#fff,#bbb);
  transition: 0.2s ease-in-out;
  height: 3em;
}

.btn-undo-desktop,
.btn-redo-desktop {
  transition: 0.1s ease-in-out;
  outline: none;
}

.btn-undo-desktop > a,
.btn-redo-desktop > a {
  color: #2196F3;
}

.btn-undo-desktop:hover,
.btn-undo-desktop:active,
.btn-undo-desktop:focus,
.btn-redo-desktop:hover,
.btn-redo-desktop:active,
.btn-redo-desktop:focus {
  box-shadow: 1px 1px 5px #666;
}

@media print {
  .sidenav, .leftnav, .top-links, .icon-holder {
    display: none;
  }

  canvas {
    padding: 0;
    margin: auto;
    display: block;
    position: absolute;
    width: 800px;
    height: 800px;
    top: 0;
    bottom: 0;
    left: 0;
    right: 0;
  }
}

.author > p {
  color: gray;
}

.author > p > a {
  color: #4864b4;
}

.switch {
  position: relative;
  display: inline-block;
  width: 60px;
  height: 30px;
}

.switch input {
  opacity: 0;
  width: 0;
  height: 0;
}

.slider {
  position: absolute;
  cursor: pointer;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background-color: #ccc;
  -webkit-transition: .4s;
  transition: .4s;
}

.slider:before {
  position: absolute;
  content: "";
  height: 22px;
  width: 22px;
  left: 4px;
  bottom: 4px;
  background-color: white;
  -webkit-transition: .4s;
  transition: .4s;
}

input:checked + .slider {
  background-color: #2196F3;
}

input:focus + .slider {
  box-shadow: 0 0 1px #2196F3;
}

input:checked + .slider:before {
  transform: translateX(30px);
}

.slider.round {
  border-radius: 30px;
}

.slider.round:before {
  border-radius: 50%;
}

.btn-mobile > label > i.fas {
  vertical-align: -2px;
}

.btn-mobile > label > .fas.fa-circle.fa-md {
  vertical-align: -3px;
}

.btn-mobile > label > .fas.fa-circle.fa-lg {
  vertical-align: -5px;
}

.btn-mobile > label > .fas.fa-align-justify,
.btn-mobile > label > .fas.fa-palette {
  vertical-align: -4px;
}

.btn-mobile > label > .fas.fa-star-half-alt,
.btn-mobile > label > .fas.fa-star {
  vertical-align: -7px;
}

.fa-palette.fa-desktop-icon {
  vertical-align: -23%;
}

.fa-circle.fa-desktop-icon.fa-md {
  vertical-align: -8%;
}

.fa-circle.fa-desktop-icon.fa-lg {
  vertical-align: -17%;
}

.fa-align-justify.fa-desktop-icon {
  vertical-align: -20%;
}

.fa-star.fa-desktop-icon,
.fa-star-half-alt.fa-desktop-icon {
  vertical-align: -45%;
}