styles.css

body {
  font-family: Arial, sans-serif;
  width: 375px;
  padding: 10px;
}

textarea {
  width: 100%;
  margin-bottom: 10px;
  height: auto;
}

button {
  width: auto;
  margin-bottom: 5px;
}

.options_desc {
  margin: 10px 0;
}

.options_desc p {
  margin: 0;
  padding: 0;
}

.opt_btn {
  display: flex;
  flex-direction: row;
  align-items: center;
  justify-content: flex-end;
  gap: 10px;
}

#popup_tips {
  margin-bottom: 10px;
}

.popup_btn {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  justify-content: center;
}

.popup_btn_copy,
.popup_btn_ext {
  display: flex;
  flex-direction: row;
  align-items: center;
  justify-content: flex-end;
  gap: 5px;
}

.notification {
  position: fixed;
  font-size: 16px;
  left: 50%;
  top: 10px;
  width: auto;
  white-space: nowrap;
  transform: translateX(-50%);
  background-color: #4CAF50;
  color: white;
  padding: 15px;
  border-radius: 5px;
  z-index: 1000;
  transition: opacity 0.5s;
}

#whitelist {
  field-sizing: content;
}

#pureurl {
  width: 100%;
  resize: none;
  overflow: hidden;
  font-size: 12px;
  field-sizing: content;
}