:root {
  --ui-width: calc(8% + 200px);
}

.ui-div {
  position: absolute;
  background-color: #313131;
  top:0;
  left:0;
  width:var(--ui-width);
  height:100%;
  text-align: center;
  font-size: large;
  color:ivory;
}

.canvas-div {
  position:absolute;
  background-color:lightgray;
  top:0;
  right: 0;
  width:calc(100% - var(--ui-width));
  height:100%;
}

.item {
  width:80%;
  font-size: large;
}

.ui-label {
  display: inline-block;
  margin-top: 15px;
  margin-bottom: 5px;
}

.ui-input {
  width:75%;
}

.ui-button-label {
  border: 1px solid #ccc;
  display: inline-block;
  padding: 6px 12px;
  cursor: pointer;
}

.ui-tab-label {
  width:85%;
}

.ui-tab {
  border: 1px solid #ccc; 
  display: inline-block;
  width:95%;
  margin-left: 2%;
  padding-bottom: 10px;
}


.loader {
  border: 16px solid #f3f3f3;
  border-radius: 50%;
  border-top: 16px solid #3498db;
  width: 100px;
  height: 100px;
  -webkit-animation: spin 2s linear infinite; /* Safari */
  animation: spin 2s linear infinite;
  position: fixed;
  top: 50%;
  left: 50%;
  margin-top: -50px;
  margin-left: -50px;
}

.loader-text{
  position: fixed;
  z-index: 1000;
  top: 40%;
  left: 35%;
  float:left;
  background: #313131;
  width: 30%;
  padding: 20px;
  color:ivory;
  border-radius: 25px;
  text-align: center;
}

/* Safari */
@-webkit-keyframes spin {
  0% { -webkit-transform: rotate(0deg); }
  100% { -webkit-transform: rotate(360deg); }
}

@keyframes spin {
  0% { transform: rotate(0deg); }
  100% { transform: rotate(360deg); }
}