index.css

@import url('https://fonts.googleapis.com/css?family=Poppins:400,500,600,700&display=swap');

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

body {
  background: radial-gradient(ellipse at bottom, #1b2735 0%, #090a0f 100%);
  height: 40vh;
  font-family: 'Poppins', sans-serif;
}

nav{
  display: flex;
  height: 80px;
  width: 100%;
  background: #1b1b1b;
  align-items: center;
  justify-content: space-between;
  padding: 0 50px 0 100px;
  flex-wrap: wrap;
}
nav .logo{
  color: #fff;
  font-size: 35px;
  font-weight: 600;
}
nav ul{
  display: flex;
  flex-wrap: wrap;
  list-style: none;
}
nav ul li{
  margin: 0 5px;
}
nav ul li a{
  color: #f2f2f2;
  text-decoration: none;
  font-size: 18px;
  font-weight: 500;
  padding: 8px 15px;
  border-radius: 5px;
  letter-spacing: 1px;
  transition: all 0.3s ease;
}
nav ul li a.active,
nav ul li a:hover{
  color: #111;
  background: #fff;
}
nav .menu-btn i{
  color: #fff;
  font-size: 22px;
  cursor: pointer;
  display: none;
}
input[type="checkbox"]{
  display: none;
}
@media (max-width: 1000px){
  nav{
    padding: 0 40px 0 50px;
  }
}
@media (max-width: 920px) {
  nav .menu-btn i{
    display: block;
  }
  #click:checked ~ .menu-btn i:before{
    content: "\f00d";
  }
  nav ul{
    position: fixed;
    top: 80px;
    left: -100%;
    background: #111;
    height: 100vh;
    width: 100%;
    text-align: center;
    display: block;
    transition: all 0.3s ease;
  }
  #click:checked ~ ul{
    left: 0;
  }
  nav ul li{
    width: 100%;
    margin: 40px 0;
  }
  nav ul li a{
    width: 100%;
    margin-left: -100%;
    display: block;
    font-size: 20px;
    transition: 0.6s cubic-bezier(0.68, -0.55, 0.265, 1.55);
  }
  #click:checked ~ ul li a{
    margin-left: 0px;
  }
  nav ul li a.active,
  nav ul li a:hover{
    background: none;
    color: cyan;
  }
}
.content{
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  text-align: center;
  z-index: -1;
  width: 100%;
  padding: 0 30px;
  color: #1b1b1b;
}
.content div{
  font-size: 40px;
  font-weight: 700;
}

::-webkit-scrollbar {
  width: 12px;
  background: #000;
}
::-webkit-scrollbar-thumb {
  background: linear-gradient(transparent, #00c3ff);
  border-radius: 6px;
}
::-webkit-scrollbar-thumb:hover {
  background: linear-gradient(transparent, #0099ff);
}

.night {
  position: absolute;
  width: 90%;
  height: 100%;
  transform: rotateZ(45deg);
}
.shooting_star {
  position: absolute;
  left: 50%;
  top: 50%;
  height: 2px;
  background: linear-gradient(-45deg, rgba(95, 145, 255, 1), rgba(0, 0, 255, 0));
  border-radius: 999px;
  filter: drop-shadow(0 0 6px rgba(105, 155, 255, 1));
  animation: tail 3000ms ease-in-out infinite, shooting 3000ms ease-in-out infinite;
}
.shooting_star::before, .shooting_star::after {
  content: '';
  position: absolute;
  top: calc(50% - 1px);
  right: 0;
  height: 2px;
  background: linear-gradient(-45deg, rgba(0, 0, 255, 0), rgba(95, 145, 255, 1), rgba(0, 0, 255, 0));
  transform: translateX(50%) rotateZ(45deg);
  border-radius: 100%;
  animation: shining 3000ms ease-in-out infinite;
}
.shooting_star::after {
  transform: translateX(50%) rotateZ(-45deg);
}
.shooting_star:nth-child(1) {
  top: calc(50% - 146px);
  left: calc(50% - 217px);
  animation-delay: 8002ms;
}
.shooting_star:nth-child(1)::before, .shooting_star::after:nth-child(1), .shooting_star:nth-child(1)::after {
  animation-delay: 8002ms;
}
.shooting_star:nth-child(2) {
  top: calc(50% - -54px);
  left: calc(50% - 262px);
  animation-delay: 7008ms;
}
.shooting_star:nth-child(2)::before, .shooting_star::after:nth-child(2), .shooting_star:nth-child(2)::after {
  animation-delay: 7008ms;
}
.shooting_star:nth-child(3) {
  top: calc(50% - -140px);
  left: calc(50% - 28px);
  animation-delay: 9912ms;
}
.shooting_star:nth-child(3)::before, .shooting_star::after:nth-child(3), .shooting_star:nth-child(3)::after {
  animation-delay: 9912ms;
}
.shooting_star:nth-child(4) {
  top: calc(50% - -130px);
  left: calc(50% - 165px);
  animation-delay: 7197ms;
}
.shooting_star:nth-child(4)::before, .shooting_star::after:nth-child(4), .shooting_star:nth-child(4)::after {
  animation-delay: 7197ms;
}
.shooting_star:nth-child(5) {
  top: calc(50% - 45px);
  left: calc(50% - 170px);
  animation-delay: 5761ms;
}
.shooting_star:nth-child(5)::before, .shooting_star::after:nth-child(5), .shooting_star:nth-child(5)::after {
  animation-delay: 5761ms;
}
.shooting_star:nth-child(6) {
  top: calc(50% - 41px);
  left: calc(50% - 237px);
  animation-delay: 5867ms;
}
.shooting_star:nth-child(6)::before, .shooting_star::after:nth-child(6), .shooting_star:nth-child(6)::after {
  animation-delay: 5867ms;
}
.shooting_star:nth-child(7) {
  top: calc(50% - -129px);
  left: calc(50% - 221px);
  animation-delay: 5769ms;
}
.shooting_star:nth-child(7)::before, .shooting_star::after:nth-child(7), .shooting_star:nth-child(7)::after {
  animation-delay: 5769ms;
}
.shooting_star:nth-child(8) {
  top: calc(50% - 54px);
  left: calc(50% - 242px);
  animation-delay: 4113ms;
}
.shooting_star:nth-child(8)::before, .shooting_star::after:nth-child(8), .shooting_star:nth-child(8)::after {
  animation-delay: 4113ms;
}
.shooting_star:nth-child(9) {
  top: calc(50% - -163px);
  left: calc(50% - 136px);
  animation-delay: 5735ms;
}
.shooting_star:nth-child(9)::before, .shooting_star::after:nth-child(9), .shooting_star:nth-child(9)::after {
  animation-delay: 5735ms;
}
.shooting_star:nth-child(10) {
  top: calc(50% - 146px);
  left: calc(50% - 187px);
  animation-delay: 8485ms;
}
.shooting_star:nth-child(10)::before, .shooting_star::after:nth-child(10), .shooting_star:nth-child(10)::after {
  animation-delay: 8485ms;
}
.shooting_star:nth-child(11) {
  top: calc(50% - -148px);
  left: calc(50% - 39px);
  animation-delay: 2034ms;
}
.shooting_star:nth-child(11)::before, .shooting_star::after:nth-child(11), .shooting_star:nth-child(11)::after {
  animation-delay: 2034ms;
}
.shooting_star:nth-child(12) {
  top: calc(50% - 90px);
  left: calc(50% - 273px);
  animation-delay: 9452ms;
}
.shooting_star:nth-child(12)::before, .shooting_star::after:nth-child(12), .shooting_star:nth-child(12)::after {
  animation-delay: 9452ms;
}
.shooting_star:nth-child(13) {
  top: calc(50% - 196px);
  left: calc(50% - 86px);
  animation-delay: 4437ms;
}
.shooting_star:nth-child(13)::before, .shooting_star::after:nth-child(13), .shooting_star:nth-child(13)::after {
  animation-delay: 4437ms;
}
.shooting_star:nth-child(14) {
  top: calc(50% - -96px);
  left: calc(50% - 156px);
  animation-delay: 5452ms;
}
.shooting_star:nth-child(14)::before, .shooting_star::after:nth-child(14), .shooting_star:nth-child(14)::after {
  animation-delay: 5452ms;
}
.shooting_star:nth-child(15) {
  top: calc(50% - 105px);
  left: calc(50% - 255px);
  animation-delay: 9359ms;
}
.shooting_star:nth-child(15)::before, .shooting_star::after:nth-child(15), .shooting_star:nth-child(15)::after {
  animation-delay: 9359ms;
}
.shooting_star:nth-child(16) {
  top: calc(50% - 171px);
  left: calc(50% - 158px);
  animation-delay: 9135ms;
}
.shooting_star:nth-child(16)::before, .shooting_star::after:nth-child(16), .shooting_star:nth-child(16)::after {
  animation-delay: 9135ms;
}
.shooting_star:nth-child(17) {
  top: calc(50% - -115px);
  left: calc(50% - 119px);
  animation-delay: 1238ms;
}
.shooting_star:nth-child(17)::before, .shooting_star::after:nth-child(17), .shooting_star:nth-child(17)::after {
  animation-delay: 1238ms;
}
.shooting_star:nth-child(18) {
  top: calc(50% - -16px);
  left: calc(50% - 104px);
  animation-delay: 8700ms;
}
.shooting_star:nth-child(18)::before, .shooting_star::after:nth-child(18), .shooting_star:nth-child(18)::after {
  animation-delay: 8700ms;
}
.shooting_star:nth-child(19) {
  top: calc(50% - 84px);
  left: calc(50% - 120px);
  animation-delay: 4956ms;
}
.shooting_star:nth-child(19)::before, .shooting_star::after:nth-child(19), .shooting_star:nth-child(19)::after {
  animation-delay: 4956ms;
}
.shooting_star:nth-child(20) {
  top: calc(50% - 55px);
  left: calc(50% - 122px);
  animation-delay: 6440ms;
}
.shooting_star:nth-child(20)::before, .shooting_star::after:nth-child(20), .shooting_star:nth-child(20)::after {
  animation-delay: 6440ms;
}
@keyframes tail {
  0% {
      width: 0;
 }
  30% {
      width: 100px;
 }
  100% {
      width: 0;
 }
}
@keyframes shining {
  0% {
      width: 0;
 }
  50% {
      width: 30px;
 }
  100% {
      width: 0;
 }
}
@keyframes shooting {
  0% {
      transform: translateX(0);
 }
  100% {
      transform: translateX(300px);
 }
}
@keyframes sky {
  0% {
      transform: rotate(45deg);
 }
  100% {
      transform: rotate(405deg);
 }
}

.welcome-text {
	position: absolute;
	width: 600px;
	height: 300px;
  margin-top: 1cm;
  margin-left: 11cm;
  text-align: center;
  overflow: hidden;  
  animation: 
    typing 3.5s steps(40, end),
    blink-caret .75s step-end infinite;
}

/* The typing effect */
@keyframes typing {
  from { width: 0 }
  to { width: 40% }
}

.welcome-text h1 {
	text-align: center;
	color: #fff;
  text-transform: uppercase;
  white-space: nowrap;
	font-size: 60px;
}
.welcome-text h1 span {
  color: #00fecb;
  white-space: nowrap;
}

h2 {
  margin-top: 4cm;
  margin-left: 12cm;
  font-family: 'Roboto', sans-serif;
  color: rgb(34, 138, 151);
}

/*resposive*/

@media (max-width:600px) {
	.welcome-text {
		width: 100%;
		height: auto;
		margin: 30% 0;
	}
	.welcome-text h1 {
		font-size: 30px;
	}
}

.card {
    position: relative;
    padding: 40px 30px;
    clip-path: circle(2.5% at 95% 11%);
    transition: all ease-in-out 0.3s;
    background-color: #fff;
    z-index: 100;
  }
  .card__infoicon {
    position: absolute;
    top: 2.5px;
    right: 61px;
    font-size: 1.4em;
    color: #000;
    transition: ease-out 0.3s;
  }
  .card__title {
    margin: 0;
    font-size: 3em;
    line-height: 1.8;
  }
  .card__description {
    margin: 0;
    font-size: 1.1em;
    line-height: 1.6;
  }
  .card__credits {
    margin: 0;
    padding: 4px 0;
    font-size: 1.1em;
  }
  .card__reference {
    display: inline-block;
    border-bottom: 1px solid transparent;
    color: #09f;
    text-decoration: none;
    transition: ease-in 0.3s;
  }
  .card__reference:hover {
    border-bottom-color: #09f;
  }
  .card:hover, .card:focus {
    clip-path: circle(75%);
    border-radius: 20px;
    box-shadow: 0px 3px 9px rgba(0, 0, 0, 0.12), 0px 3px 18px rgba(0, 0, 0, 0.08);
    background: #fff;
    outline: none;
  }
  .card:hover .card__infoicon, .card:focus .card__infoicon {
    opacity: 0;
  }
  .card:focus {
    box-shadow: 0px 3px 9px rgba(0, 0, 0, 0.12), 0px 3px 18px rgba(0, 0, 0, 0.08), 0px 0px 0px 4px rgba(0, 0, 0, 0.2);
  }