.box {
  position: absolute;
  width: 250px;
  height: 30px;
  border-radius: 20px;
  border: 3px solid #5D4037;
  overflow: hidden;
  position: relative;
  cursor: pointer;
  background: #f5f5f5;
  display: flex;
  align-items: center;
  justify-content: center;
  font-family: Arial, sans-serif;
  font-size: 24px;
  font-weight: bold;
  color: #5D4037;
  user-select: none;
}

.fill {
  position: absolute;
  right: 0;
  top: 0;
  height: 100%;
  background: linear-gradient(270deg, #8B4513, #A0522D);
  z-index: 0;
  transition: width 0.3s;
}

.text {
  position: relative;
  z-index: 1;
  text-shadow: 0 1px 2px rgba(255,255,255,0.8);
  font-size: 20px;
}