.exec{
    position: absolute;
    top: 0;
    right: 0;
}
.open-in-playground{
    position: absolute;
    top: 0;
    left: 0;
}
.return{
    overflow-y: scroll;
    max-height: 160px;
    display: block;
}
.btn{
    background: #3498db;
    background-image: -webkit-linear-gradient(top, #3498db, #2980b9);
    background-image: -moz-linear-gradient(top, #3498db, #2980b9);
    background-image: -ms-linear-gradient(top, #3498db, #2980b9);
    background-image: -o-linear-gradient(top, #3498db, #2980b9);
    background-image: linear-gradient(to bottom, #3498db, #2980b9);
    -webkit-border-radius: 4;
    -moz-border-radius: 4;
    border-radius: 4px;
    border: none;
    color: #ffffff;
    padding: 4px 10px 4px 10px;
    text-decoration: none;
    cursor: pointer;
    font-weight: 600;
    /*font-size: 50px;*/
}
.btn:hover {
  background: #3cb0fd;
  background-image: -webkit-linear-gradient(top, #3cb0fd, #3498db);
  background-image: -moz-linear-gradient(top, #3cb0fd, #3498db);
  background-image: -ms-linear-gradient(top, #3cb0fd, #3498db);
  background-image: -o-linear-gradient(top, #3cb0fd, #3498db);
  background-image: linear-gradient(to bottom, #3cb0fd, #3498db);
  text-decoration: none;
}
