/*Defining CSS Variables*/
:root {
  --page_1_color: steelblue;
  --page_2_color: orange;
  --page_3_color: teal;
  --page_4_color: slateblue;
  --animate_speed: 1s;
}

body {
  font-family: system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, "Noto Sans", sans-serif, "Apple Color Emoji", "Segoe UI Emoji", "Segoe UI Symbol", "Noto Color Emoji";
  line-height: 1.4;
  color: #fff;
  margin: 0;
  padding: 0;
  overflow: hidden;
}
/*Page colors*/
#page_1 {
  background: var(--page_1_color);
}
#page_2 {
  background: var(--page_2_color);
}
#page_3 {
  background: var(--page_3_color);
}
#page_4 {
  background: var(--page_4_color);
}
.page {
  display: flex;
  flex-direction: column;
  height: 100vh;
  align-items: center;
  justify-content: center;
  text-align: center;
  padding: 0 4rem;
}
.page h1 {
  font-size: 4rem;
  line-height: 1.2;
  margin: 1rem;
}
.page p {
  font-size: 1.3rem;
}

.btn {
  display: inline-block;
  padding: 1rem 2rem;
  background: #f4f4f4;
  color: #333;
  border-radius: 5px;
  border: none;
  margin-top: 1rem;
  font-size: 1.1rem;
  text-decoration: none;
  transition: all ease-in 0.3s;
}
.btn:hover,
.btn_dark {
  background: #333;
  color: #fff;
}
.btn_dark:hover {
  background: #f4f4f4;
  color: #333;
}
/*Page Animation*/
#page_1 h1 {
  transform: translateY(-1000px);
  animation: heading var(--animate_speed) forwards ease-in;
}
@keyframes heading {
  to {
    transform: translateY(0);
  }
}
#page_1 p {
  transform: translateX(-2000px);
  animation: text 2.7s forwards ease-in;
}
@keyframes text {
  to {
    transform: translateX(0);
  }
}