style.css

* {
  padding: 0;
  margin: 0;
  box-sizing: border-box;
  font-family: "Oswald", sans-serif;
}

:root {
  --light-brown: #8d7361;
  --light-gray: #eeebe7;
  --dark-brown: #50423d;
  --grey-blue: #8b8da0;
  --light-beige: #c9bbae;
}

@keyframes fade {
  0% {
    transform: translateY(-25px);
    opacity: 0.75;
  }
  100% {
    transform: translateX(0);
    opacity: 1;
  }
}

@keyframes fade-text {
  0% {
    transform: translateY(-25px);
    opacity: 0.75;
  }
  100% {
    transform: translateY(0px);
    opacity: 1;
  }
}

.header {
  width: 100%;
  height: 12vh;
  padding-top: 1vh;
  background-color: var(--light-brown);
  color: var(--light-gray);
  text-align: center;
  text-transform: uppercase;
  text-shadow: var(--grey-blue) 2px 5px 3px;
  font-size: clamp(12px, 2vh, 34px);
}

.wrap {
  display: flex;
  flex-direction: row;
  justify-content: center;
  align-items: flex-start;
  width: 100%;
  height: 88vh;
  background-color: var(--light-gray);
  position: relative;
  overflow-x: hidden;
}

.menu {
  -webkit-tap-highlight-color: rgba(0, 0, 0, 0);
  width: 30%;
  height: 100%;
  background-color: var(--light-gray);
  cursor: pointer;
  padding: 1.2em;
  position: relative;
  transition: all ease 0.2s;
}

.menu__item:hover {
  color: var(--grey-blue);
  font-size: 1.2em;
  font-weight: 700;
  transition: all ease 0.1s;
}

.menu__item {
  background-color: var(--light-gray);
  color: var(--dark-brown);
  font-size: 1.2em;
  margin-bottom: 15px;
  height: 60px;
  padding: 5px;
  box-shadow: 0 4px 12px var(--dark-brown), 0 16px 20px var(--dark-brown);
}

.menu__item__active {
  font-size: 1.8em;
  font-weight: 700;
}

.content {
  width: 70%;
  height: 100%;
  background-color: var(--light-gray);
  position: relative;
}

.group-info {
  height: 88vh;
  display: flex;
  flex-direction: column;
  justify-content: stretch;
}

.group-info__src {
  flex-grow: 2;
  align-self: center;
  object-fit: cover;
  max-width: 60%;
  max-height: 50%;
  margin-left: 20%;
  margin-right: 20%;
  border-radius: 2%;
  box-shadow: 5px 15px 10px 3px;
  animation: fade 0.7s ease-out;
}

.group-info__text,
.group-info__header {
  margin: 0 auto;
  width: 80%;
  text-align: center;
  margin-top: 25px;
  color: var(--dark-brown);
}

.group-info__header {
  flex-grow: 0.1;
  font-size: 2.2em;
  text-transform: uppercase;
  margin-bottom: 25px;
  text-shadow: 2px 2px 2px var(--grey-blue);
  animation: fade-text 0.7s ease-out;
}

.group-info__text {
  flex-grow: 2;
  font-size: 1.5em;
  animation: fade-text 0.7s ease-out;
}

.menu__burger:before,
.menu__burger:after,
.menu__burger {
  display: none;
}

.hidden {
  display: none;
  z-index: -10;
}

@media screen and (min-width: 1025px) {
  .wrap {
    font-size: 18px;
  }
}

@media screen and (min-width: 769px) and (max-width: 1024px) {
  .header {
    font-size: 18px;
  }

  .wrap {
    font-size: 14px;
  }
}

@media screen and (max-width: 768px) {
  @media screen and (orientation: landscape) {
    .header {
      height: 16vh;
      font-size: min(14px, 2vw);
    }

    .wrap {
      height: 84vh;
      font-size: 12px;
      text-align: center;
    }

    .menu {
      z-index: 10;
      position: absolute;
      left: 5vw;
      width: 88vw;
    }

    .menu__item {
      height: 15vh;
    }
  }

  .header {
    height: 8vh;
    font-size: min(16px, 2vh);
  }

  .wrap {
    height: 92vh;
    font-size: 22px;
    text-align: center;
  }

  .menu {
    z-index: 10;
    position: absolute;
    left: 5vw;
    width: 88vw;
  }

  .menu__item {
    height: 12vh;
    padding-top: 1vh;
  }

  .slide__left {
    left: -720px;
  }

  .content__100 {
    width: 100%;
  }

  .header h1 {
    display: inline-block;
    position: relative;
  }

  .menu__burger {
    display: inline-block;
    position: relative;
    left: -5vw;
    width: 30px;
    height: 20px;
  }

  .menu__burger:before,
  .menu__burger:after {
    display: block;
    content: "";
    background-color: var(--light-beige);
    position: absolute;
    width: 100%;
    height: 2px;
    left: 0;
  }

  .menu__burger:before {
    top: 0;
  }

  .menu__burger:after {
    bottom: 0;
  }

  .menu__burger span {
    position: absolute;
    background-color: var(--light-beige);
    left: 0;
    width: 100%;
    height: 2px;
    top: 9px;
  }
}

@media screen and (max-width: 480px) {
  .header {
    height: 7vh;
    font-size: 14px;
  }

  .wrap {
    height: 93vh;
    font-size: 18px;
  }
}