style.css

html, body {
  height: 100%;
  width: 100%;
  padding: 0;
  margin: 0;
}
body {
  background-color: #fff;
  font-family: sans-serif;
  margin: 0 0px;
  padding: 0 5px 0 5px;
  overflow: hidden
}
h1 {
  font-weight: normal;
  font-size: 140%;
  padding-top: 10px;
  margin: 0;
}
h3 {
  margin-top: 0px;
  margin-bottom: 0;
}
table {
  height: 100%;
  width: 100%;
  padding: 0;
  marging: 0;
}
tr {
  padding: 0;
  margin: 0;
}  
td {
  vertical-align: top;
  padding: 0;
  margin: 0;
}
.bottom_align {
  vertical-align: bottom;
  padding-bottom: 5px;
}
#blocklyFactory, 
#blocklyGenerator{
  position: fixed;
}
#blocklyFactoryMask,
#blocklyGeneratorMask {
  background-color: #000;
  cursor: not-allowed;
  display: none;
  position: fixed;
  opacity: 0.2;
  z-index: 9;
}
/* Temporarily set Generator mask on during development */
#blocklyGeneratorMask {
  display: block;
}

#preview {
  position: absolute;
}
pre,
#languageTA {
  border: #ddd 1px solid;
  margin-top: 0;
  position: absolute;
  overflow: scroll;
}
#languageTA {
  display: none;
  font-family: monospace;
  font-size: 10pt;
}

button {
  border-radius: 4px;
  border: 1px solid #ddd;
  background-color: #eee;
  color: #000;
  padding: 5px;
  margin: 0;
  margin-right: 10px;
  font-size: 1.05rem;
}
button:hover:not(:disabled) {
  box-shadow: 2px 2px 5px #888;
}
button:disabled {
  opacity: 0.6;
}
button>* {
  opacity: 0.6;
  vertical-align: text-bottom;
}
button:hover:not(:disabled)>* {
  opacity: 1;
}

/* Overwrites the Blockly CSS */
.blocklyToolboxDiv {
  width: 135px !important;
}