* {
  box-sizing: border-box;
  padding: 0;
  margin: 0;
  font-family: 'Roboto', sans-serif;
  font-weight: 400;
  font-size: 16px;
  line-height: 1.3;
}
#image {
  z-index: 0;
}

#image img {
  display: block;
  margin-right: auto;
  margin-left: auto;
  width: 100%;
  max-width: 820px;
}
#text {
  z-index: 0;
  padding: 18px 38px;
}
.nav {
  z-index: 9;
  position: fixed;
  bottom: 10.5%;
  right: 5.5%;
  width: 48px;
  height: 48px;
  border-radius: 50%;
  background-color: #f9f9f9;
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  visibilty: hidden;
  opacity: 0;
  box-shadow: 3px 3px 10px 0px rgba(0, 0, 0, 0.48);
  cursor: pointer;
  transition: all 0.3s ease-in;
}
.nav.show {
  visibility: visible;
  opacity: 1;
}
#header-overlay {
  height: 100vh;
  width: 100%;
  background:transparent;
  position: absolute;
  top: 0;
  left: 0;
  z-index: 1000;
}
#intro {
  position: absolute; 
  top: 25%;
  left: 50%;
  transform: translate(-50%, -50%);
  width: 100%;
  text-align: center;
  color: rgba(96, 125, 139,1.0);
}

#intro h3 {
  font-family: 'Roboto', serif;
  font-size: 50px;
  text-transform: capitalize;
  font-weight: 400;
  padding-bottom: 7px;
  transition: .7s ease-in-out;
  color: rgba(70,130,180);
  
}

#intro a {
  font-family: 'Roboto', sans-serif;
  font-size: 14px;
  border: 1px solid rgba(96, 125, 139,1.0);
  padding: 10px 30px;
  position: absolute;
  transition: .3s ease-in-out;
  cursor: pointer;
  left: 0;
  top: 0;
}
#button-container {
  height: 40px;
  width: 118px;
  position: absolute;
  left: 50%;
  transform: translate(-50%, 50%);
  transition: .3s ease-in-out;
}
#button-overlay {
  height: 40px;
  width: 0;
  top: 0;
  left: 0;
  position: absolute;
  background: rgba(0, 255, 255, 1);
  transition: .3s ease-in-out;
}
.grow {
  width: 118px !important;
}

.grow2 {
  color: #000;
  border: 1px solid rgba(255, 255, 240) !important;
}
fuller {
  margin-left: -8%;
  opacity: 0;
  visibility: hidden;
}

.fuller2 {
  visibility: hidden;
  opacity: 0;
}
#menu-button-container {
  display: inline-block;
  float: right;
  padding: 20px;
}

#menu-button {
  height: 30px;
  width: 32px;
  position: relative;
  cursor: pointer;
  z-index: 2000;
  overflow: hidden;
}
#menu-button div {
  height: 3px;
  width: 100%;
  background: rgba(0, 0, 255);
  position: absolute;
  top: 14px;
  transition: .4s ease-in-out;
}
#menu-button div:nth-child(1) {
  top: 7px;
} 

#menu-button div:nth-child(2), #menu-button div:nth-child(3) {
  top: 14px;
}

#menu-button div:nth-child(4) {
  top: 21px;
}


#menu-button.animate div:nth-child(1), #menu-button.animate div:nth-child(4) {
    top: 14px;
    opacity: 0;
  }

#menu-button.animate div:nth-child(2) {
    transform: rotate(45deg);
  }

#menu-button.animate div:nth-child(3) {
  transform: rotate(-45deg);
  
}
#menu-button.change-color div {
  background: rgba(0, 0, 255); /* курсор на кнопке закрыть */
}

#menu-button.hover-animation div:nth-child(1), #menu-button.hover-animation div:nth-child(4) {
  width: 80%;
}

#menu-button.hover-color div {
  background: rgba(0, 0, 255); /* активность на кнопке закрыть */
}

#menu-button.hover-color2 div {
  background: rgba(255, 255, 255) !important; /* курсор за пределом кнопки */
}
#menu-overlay {
  position: absolute;
  height: 0;
  width: 100%;
  background: url("https://raw.githubusercontent.com/elizavetauharskih/files1/refs/heads/main/%D0%9A%D0%BE%D1%82%20%D0%BD%D0%B0%20%D0%BE%D0%B1%D0%BB%D0%B0%D0%BA%D0%B0%D1%85.jpg"); /* ваше перекрывающее фото */
  left: 0;
  top: 0;
  transition: .5s ease-in;
  z-index: 2000;
}

.reveal {
  height: 564px !important; 
}
#nav-container {
  position: absolute;
  top: 10; 
  left: 60;
  transform: translate(-50%, -50%);
  z-index: 2000;
  transition: 1s ease-out;
}

#nav-container ul li {
  list-style: none;
  transition: .6s ease-in-out;
}
#nav-container ul li a {
  text-decoration: none;
  font-family: 'Roboto', serif;
  font-size: 50px;
  line-height: 28px;
  color: rgba(0, 0, 139);
  transition: .3s ease-in-out;
}
.hidden {
  opacity: 0;
  visibility: hidden;
  margin-left: -60%;
}
.nav-animate {
  color: rgba(0, 0, 255) !important; 
}
.letter-a {
	color: red;
	float: left;
	font-size: 84px;
	line-height: 64px;
	padding-top: 4px;
	padding-right: 8px;
	padding-left: 3px;
	font-family: 'Roboto', sans-serif;