*{
  margin: 0;
  padding: 0;
  font-family: "Consolas";
}
body{
  background: #333;
}

.CoderHelper{
  position: fixed;
  top: 40px;
  left: 40px;
  cursor: auto; 
}

.btn{
  position: absolute;
  top: 40px;
  right: 40px;
  color: white;
  font-size: 36px;
  cursor: pointer;
  transition: 0.4s;
}
.btn:hover{
  transform: rotate(90deg);
}

.box{
  position: absolute;
  top: -50%;
  left: 50%;
  transform: translate(-50%,-50%);
  background: #f1f1f1;
  width: 400px;
  transition: 1s;
}
.box-show{
  top: 50%;
}
.box h2{
  background: #2c3e50;
  padding: 20px;
  font-size: 18px;
  color: white;
}
.box h3{
  background: #2c3e50;
  padding: 20px;
  font-size: 25px;
  color: white;
}
.box-c{
  padding: 20px 40px;
  overflow: hidden;
}
.txtb{
  position: relative;
  margin-bottom: 10px;
}
#hex{
  width: 65%;
  padding: 0 60px;
  height: 40px;
  border: 1px solid #2c3e50;
}
.prev{
  width: 50px;
  height: 30px;
  position: absolute;
  top: 5px;
  left: 5px;
}
.apply{
  float: right;
  border: none;
  background: #2c3e50;
  padding: 6px 30px;
  color: white;
  cursor: pointer;
}