html,
body {
  width: 100%;
  height: 100%;
  background-image: url("https://akonet.cloud/assets/img/bg.jpg");
  background-repeat: repeat;
}

label {
  color: white;
}
.index-form {
  max-width: 400px;
  margin: 0 auto;
}
h1 {
  font-size: 1.1em;
  color: white;
}
.content {
  height: 100%;
  width: 100%;
  overflow: auto;
}

.form-group.invalid .form-control {
  border-color: #dc3545;
  border-width: 3px;
}

.form-group .error-message {
  display: none;
}

.form-group.invalid .error-message {
  color: #dc3545;
  display: block;
  text-align: left;
}

.div-input {
  border-bottom: 1px solid rgba(0,0,0,0.2);
  font-size: 11px;
  text-align: left;
  padding: 2px;
  /* max-width: 1000px; */
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
  height: 22px;
}

.div-button-input {
  float: left;
  border-bottom: 1px solid rgba(0,0,0,0.2);
  height: 22px;
}

.btn-input {
  color: #fff;
  background-color: dodgerblue;
  border-color: #6c757d;
  width: auto;
  margin-left: 5px;
  height: 20px;
  border-radius: 5px;
}

.alert {
  text-align: center;
}

.title h2 {
  color: #ddd;
  text-align: center;
}
.sandbox-container {
  display: flex;
  flex-wrap: wrap;
}
.sandbox-container .sandbox-area {
  flex: 1 0 400px;
  padding: 15px;
}
.sandbox-container .sandbox-area > * {
  padding: 15px;
  width: 850px;
}
.sandbox-container .sandbox-area .form {
  background-color: #2d2c2c;
  border: 1px solid #ddd;
  border-radius: 4px;
  padding: 15px;
  margin: 0 auto;
  max-width: 550px;
}
.sandbox-container .sandbox-area .form a {
  text-align: right;
}
.sandbox-container .sandbox-area .form .dropdown {
  float: right;
}
.sandbox-container .sandbox-area .form .form-title {
  font-weight: bold;
  font-size: 1.4em;
}
.sandbox-container .sandbox-area .form .download > * {
  display: inline-block;
}
.sandbox-container .sandbox-area .sandbox-viewer .data-viewer {
  background-color: #fafafa;
  border-radius: 4px;
  font-size: .8em;
  overflow-y: scroll;
  border: 1px solid black;
  height: 250px;
  color: black;
}
.sandbox-container .sandbox-area .form.firmware-update-form {
  display: none;
}
.sandbox-container .sandbox-area .form.firmware-update-form.visible {
  display: block;
}