@font-face {font-family: Liberation Serif; src: url(http://jdgmiles.github.io/LiberationSerif.woff);}
@font-face {font-family: Liberation Serif Bold; src: url(http://jdgmiles.github.io/LiberationSerif-Bold.woff);}
@font-face {font-family: Liberation Serif Italic; src: url(http://jdgmiles.github.io/LiberationSerif-Italic.woff);}
@font-face {font-family: Liberation Serif Bold Italic; src: url(http://jdgmiles.github.io/LiberationSerif-BoldItalic.woff);}

body {font-family: Liberation Serif, Tahoma, Arial, Helvetica, Sans-Serif; font-size: 150%; background-color: black; color:white;}

.liberationregular {font-family:Liberation Serif, Tahoma, Arial, Helvetica, Sans-Serif}
.liberationbold {font-family:Liberation Serif Bold, Liberation Serif, Tahoma, Arial, Helvetica, Sans-Serif}
.liberationbolditalic {font-family:Liberation Serif Bold Italic, Liberation Serif, Tahoma, Arial, Helvetica, Sans-Serif}
.liberationitalic {font-family:Liberation Serif Italic, Liberation Serif, Tahoma, Arial, Helvetica, Sans-Serif}

.typerbutton {font-family: Liberation Serif, Tahoma, Arial, Helvetica, Sans-Serif; font-size:30px}
.operationbutton {width:40px; height:40px; font-family: Liberation Serif, Tahoma, Arial, Helvetica, Sans-Serif; background-color: black; color:white; text-align:center; font-size:40px; line-height:20px;}
.letterbutton {width:35px; height:35px; font-family: Liberation Serif, Tahoma, Arial, Helvetica, Sans-Serif; background-color: black; color:white; text-align:center; font-size:25px;}
.word {font-family: Liberation Serif, Tahoma, Arial, Helvetica, Sans-Serif; background-color: black; color:white; width:450px; height:104px; text-align:center; font-size:85px; border:solid 2px; border-color:white;}
.equalssign {font-family: Liberation Serif, Tahoma, Arial, Helvetica, Sans-Serif; background-color: black; color:white; text-align:center; font-size:100px}

.overlay {
  position: fixed;
  top: 0;
  bottom: 0;
  left: 0;
  right: 0;
  border:0px;
  background: rgba(0, 0, 0, 0.7);
  transition: opacity 500ms;
  visibility: hidden;
  opacity: 0;
  z-index:5;
}
.overlay:target {
  visibility: visible;
  opacity: 1;
}

.popup {
  margin: 7px;
  padding: 20px;
  background: #181818;
  border:2px solid #AAAAAA;
  border-radius: 20px;
  width: 500px;
  position: relative;
  transition: all 0s ease-in-out;
}

.popup .close {
  position: absolute;
  top: 20px;
  right: 30px;
  background-color:#181818;
  transition: all 200ms;
  font-size: 30px;
  font-weight: bold;
  text-decoration: none;
  color: #fff;
}
.popup .close:hover {
  color: #FF0000;
}
.popup .content {
  max-height: 30%;
  overflow: auto;
}