body {
  font-family: Arial, sans-serif;
  background-color: black;
}
.container {
  max-width: 500px;
  width: 100%;
  margin: 10% auto 50px;
  border: 1px solid darkgray;
  border-radius: 5px;
  padding: 30px;
  text-align: center;
  background: white;
}
h1 {
  color: #ae3d3d;
}
@media (max-width: 768px) {
  .container {
    max-width: 90%;
    margin: 5% auto;
    padding: 20px;
  }
}
@media (max-width: 480px) {
  .container {
    padding: 15px;
  }
  h1 {
    font-size: 1.5em;
  }
}
.shortner-input {
  margin: 20px 5px;
}
.shortner-input input {
  width: 95%;
}
.light-button {
  padding: 5px 20px;
  color: black;
  background-color: white;
  border: 1px solid #808080;
  border-radius: 3px;
  transition: background-color 0.3s ease;
}
.light-button:hover {
  background-color: #a8f4c9;
}
.light-select {
  background: white;
  border: 1px solid black;
  border-radius: 3px;
  padding: 3px 15px;
  transition: background-color 0.3s ease;
}
.light-select:hover {
  background-color: #a8f4c9;
}
.collapsible-container {
  border: 1px solid #ddd;
  border-radius: 8px;
  padding: 15px;
  background-color: #f9f9f9;
  position: relative;
  transition: all 0.3s ease;
  color: black;
  overflow: hidden;
  min-height: 14px;
  max-width: 800px;
  margin: 20px auto;
}
.collapsible-container .minimize-btn {
  position: absolute;
  top: 10px;
  right: 10px;
  background: #4CAF50;
  color: white;
  border: none;
  border-radius: 4px;
  padding: 5px 10px;
  cursor: pointer;
  font-size: 12px;
}
.collapsible-container .minimize-btn:hover {
  background-color: #45a049;
  transition: background-color 0.3s ease;
}
.collapsible-container .content {
  overflow: hidden;
  transition: max-height 0.3s ease, opacity 0.3s ease;
}
.collapsible-container.collapsed {
  background-color: black;
  border: none;
  transition: background-color 0.3s ease, border 0.3s ease;
}
.collapsible-container.collapsed .content {
  max-height: 0;
  opacity: 0;
}
.collapsible-container.expanded .content {
  max-height: 500px;
  opacity: 1;
}