main.css

@import url('https://fonts.googleapis.com/css2?family=Lato:ital,wght@0,300;0,700;1,100&display=swap');
:root {
  --blue: #036cb6;
  --red: #d5040a;
  --yellow: #ffd602;
}
body {
  font-family: 'Lato', sans-serif;
  height: 100%;
  margin: 0;
  overflow: hidden;
}
.page {
  height: 100vh;
  position: relative;
}
.container {
  display: grid;

  grid-template-columns: 55% 45%;
  grid-template-rows: 20% 50% 30%;
  grid-template-areas:
    'nav     aside'
    'section aside'
    'footer  aside';
  height: 100%;
  position: absolute;
  width: 100%;
  z-index: 1;
}
.navbar {
  display: flex;
  grid-area: nav;
}
.navbar__content {
  align-items: center;
  animation: 2s navbar 0.5s ease-in-out;
  display: flex;
  padding: 0 0 0 80px;
  width: 100%;
}
@keyframes navbar {
  from {
    transform: translateY(-200px);
  }
  to {
    transform: translateY(0px);
  }
}
.navbar__content img {
  width: 50px;
}
.navbar__content ul {
  display: flex;
  justify-content: space-evenly;
  list-style: none;
  padding: 0;
  width: 450px;
}
.navbar__content ul li a {
  color: var(--red);
  font-weight: 300;
  text-decoration: none;
  display: inline-block;
  transition: all 0.5s ease;
}
.navbar__content ul li:hover a {
  border-bottom: 3px solid var(--blue);
  color: var(--blue);
  font-weight: 700;
  transform: scale(1.2);
  transition: all 0.3s ease;
}

.main-content {
  animation: 2s main-content 0.7s ease-in-out;
  display: flex;
  flex-direction: column;
  grid-area: section;
  justify-content: center;
  padding-left: 80px;
}

@keyframes main-content {
  from {
    transform: translateY(-600px);
  }
  to {
    transform: translateY(0px);
  }
}
.main-content p:first-child {
  margin: 0 0 -14px 40px;
  font-size: 36px;
  font-weight: 300;
}
.main-content h1 {
  margin: 0 0 30px 0;
  font-size: 48px;
  font-weight: 700;
}
.main-content p:last-child {
  font-weight: 100;
  margin: 0;
  width: 60%;
}

.side-content {
  display: grid;
  grid-area: aside;
  align-items: center;
  grid-template-columns: repeat(6, 1fr);
}
.side-content p {
  animation-delay: 2.5s;
  animation-duration: 0.5s;
  animation-fill-mode: forwards;
  animation-name: side-content-text;
  animation-timing-function: ease-in-out;
  font-size: 36px;
  grid-column: 1 / 2;
  grid-row: 1 / 2;
  opacity: 0;
  transform: rotate(-90deg);
}

@keyframes side-content-text {
  0% {
    opacity: 0;
    transform: rotate(-90deg) translateY(-10px);
  }
  100% {
    opacity: 1;
    transform: rotate(-90deg) translateY(0px);
  }
}
.side-content img {
  animation: 2s side-content-img 1.2s ease-in-out;
  grid-column: 2 / 6;
  grid-row: 1 / 2;
  width: 100%;
  z-index: 2;
}
@keyframes side-content-img {
  from {
    transform: translate(400px, 500px) scale(0);
  }
  80% {
    transform: translate(-10px, -50px) scale(1);
  }
  to {
    transform: translate(0px, 0px);
  }
}
.side-content div {
  background: var(--yellow);
  grid-column: 4 / 7;
  grid-row: 1 / 2;
  height: 100%;
}
.footer {
  align-items: flex-end;
  animation-delay: 2s;
  animation-duration: 0.5s;
  animation-fill-mode: forwards;
  animation-name: footer;
  animation-timing-function: ease-in-out;
  background: var(--yellow);
  border-radius: 0 80px 0 0;
  display: flex;
  justify-content: space-evenly;
  transform: translateY(100%);
}
@keyframes footer {
  from {
    transform: translateY(100%);
  }
  to {
    transform: translateY(0%);
  }
}
.footer div {
  animation: footer 0.8s ease-out 3s forwards;
  background: var(--blue);
  border-radius: 20px 20px 0 0;
  display: flex;
  height: 50%;
  justify-content: center;
  width: 130px;
  transform: translateY(calc(100% + 80px));
}
.footer div:nth-child(1) {
  animation-delay: 2.5s;
}
.footer div:nth-child(2) {
  animation-delay: 3s;
}
.footer div:nth-child(3) {
  animation-delay: 3.5s;
}
.footer div:hover img {
  cursor: pointer;
  transform: translateY(-20px) scale(1.1);
  transition: transform 0.3s ease-in-out;
}
.footer div img {
  bottom: 50px;
  position: absolute;
  transform: translateY(0px) scale(1);
  transition: transform 0.5s ease-in-out;
  width: 160px;
}

.loader {
  align-items: center;
  animation: loader 2s linear forwards;
  background: white;
  display: flex;
  height: 100%;
  justify-content: center;
  position: absolute;
  width: 100%;
  z-index: 3;
}
@keyframes loader {
  0% {
    opacity: 1;
    visibility: visible;
  }
  95% {
    opacity: 1;
    visibility: visible;
  }
  100% {
    opacity: 0;
    visibility: hidden;
  }
}
.loader div {
  animation: scaling 1.5s ease-in-out infinite;
  background: var(--yellow);
  border-radius: 50%;
  height: 40px;
  margin: 10px;
  transform: scale(0);
  width: 40px;
}
.loader div:nth-child(1) {
  animation-delay: 0.2s;
}
.loader div:nth-child(2) {
  animation-delay: 0.4s;
}
.loader div:nth-child(3) {
  animation-delay: 0.6s;
}
@keyframes scaling {
  0%,
  100% {
    transform: scale(0.2);
  }
  40% {
    transform: scale(1);
  }
  50% {
    transform: scale(1);
  }
}
.hidden {
  display: none !important;
  /* display: none; */
}
.visible {
  display: grid;
}

.modal {
  background: rgb(0, 0, 0, 0.5);
  height: 100%;
  place-items: center;
  position: absolute;
  width: 100%;
  z-index: 4;
}
.modal__content {
  align-items: center;
  background: white;
  display: flex;
  flex-direction: column;
  justify-content: center;
  position: relative;
  width: 40%;
  height: 55%;
}
.modal__content_button {
  background: var(--red);
  border: none;
  box-shadow: 3px 3px 4px #bdbdbd;
  color: whitesmoke;
  cursor: pointer;
  font-size: 24px;
  font-weight: 300;
  padding: 20px;
  width: 240px;
}
.modal__content--close {
  cursor: pointer;
  position: absolute;
  right: 10px;
  top: 10px;
}
.modal__content--slider {
  height: 280px;
  margin-bottom: 60px;
  transform-origin: preserve-3d;
  width: 300px;
}
.modal__content--slider input {
  display: none;
}
.cards {
  height: 100%;
  position: relative;
  width: 100%;
}
.card {
  background: var(--yellow);
  cursor: pointer;
  display: grid;
  height: 100%;
  left: 0;
  margin: 0 auto;
  place-items: center;
  position: absolute;
  right: 0;
  transition: transform 0.5s ease;
  width: 80%;
  user-select: none;
}
.card img {
  width: 100%;
}
@keyframes show-card {
  from {
    transform: translateY(100%);
  }
  to {
    transform: translateY(0%);
  }
}

#radio-1:checked ~ .cards #card-1,
#radio-2:checked ~ .cards #card-2,
#radio-3:checked ~ .cards #card-3 {
  opacity: 1;
  transform: translateX(0) scale(1);
  z-index: 1;
}
#radio-1:checked ~ .cards #card-2,
#radio-2:checked ~ .cards #card-3,
#radio-3:checked ~ .cards #card-1 {
  opacity: 0.5;
  transform: translateX(40%) scale(0.8);
  z-index: 0;
}
#radio-1:checked ~ .cards #card-3,
#radio-2:checked ~ .cards #card-1,
#radio-3:checked ~ .cards #card-2 {
  opacity: 0.5;
  transform: translateX(-40%) scale(0.8);
  z-index: 0;
}