.split-container {
  font-family: system-ui, "Segoe UI", Roboto, Helvetica, Arial, sans-serif, "Apple Color Emoji", "Segoe UI Emoji", "Segoe UI Symbol";
  position: relative;
  width: 100%;
  height: 500px;
  background: #333;
  overflow: hidden;
}
.split {
  position: absolute;
  width: 50%;
  height: 100%;
  overflow: hidden;
  transition: width 1s ease-in-out;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
}
.split.left {
  left: 0;
  background: url("https://placehold.co/1000x800/2563eb/ffffff?text=Design") center center/cover no-repeat;
}
.split.left::before {
  content: "";
  position: absolute;
  width: 100%;
  height: 100%;
  background-color: rgba(37, 99, 235, 0.7);
}
.split.right {
  right: 0;
  background: url("https://placehold.co/1000x800/1f2937/ffffff?text=Code") center center/cover no-repeat;
}
.split.right::before {
  content: "";
  position: absolute;
  width: 100%;
  height: 100%;
  background-color: rgba(31, 41, 55, 0.8);
}
.split h1 {
  font-size: 3rem;
  color: #fff;
  position: relative;
  z-index: 10;
  white-space: nowrap;
}
.btn {
  position: relative;
  z-index: 10;
  text-decoration: none;
  color: #fff;
  border: 2px solid #fff;
  padding: 15px 30px;
  font-weight: 700;
  text-transform: uppercase;
  margin-top: 20px;
  transition: background 0.2s;
}
.btn:hover {
  background: rgba(255,255,255,0.2);
}

/* Hover Effects */
.split-container:hover .split {
  width: 30%;
}
.split-container .split:hover {
  width: 70%;
}
@media(max-width: 800px) {
  .split-container {
    height: 700px;
  }
  .split h1 {
    font-size: 2rem;
  }
  .split, .split-container:hover .split, .split-container .split:hover {
    width: 100%;
    height: 50%;
    position: relative;
  }
}