* {
  box-sizing: border-box;
}

body {
  font-family: "Lato", sans-serif;
  margin: 0;
  font-size: 1em;
  background-color: #fbeaff;
  color: #111;
}

h1,
p {
  text-align: center;
}

.grid {
  display: grid;
  padding: 1rem;
  grid-template-columns: 1fr 1fr 1fr 1fr;
  gap: 2rem;
  align-items: center;
  margin: 0 auto;
}

.imgSize {
  max-width: 100%;
  height: 13em;
  box-shadow: 0 0.2em 0.5em 0 #845ec2, 0 0.5em 1.5em 0 #845ec2;
}

#imgPlanets {
  max-height: 20em;
  max-width: 95%;
  margin: auto;
  display: block;
}

main {
  margin: auto;
  width: 90%;
}

/*----------
header
----------*/

.logo {
  width: 5em;
  height: 5em;
}

header a {
  float: left;
  color: #111;
  text-align: center;
  text-decoration: none;
  margin: 1em;
  font-size: 1em;
  line-height: 1.5em;
}

header a:hover {
  color: #845ec2;
}

.header-right {
  float: right;
  margin: 1.5em;
}

input[type="text"] {
  display: none;
  float: right;
  padding: 1em;
  margin-top: 0.3em;
  border: 1px solid #845ec2;
  border-radius: 1em;
  font-size: 1em;
}
#input {
  display: none;
}

#search {
  float: right;
  background-color: inherit;
  padding: 2em;
  margin-top: 0.3em;
  background-image: url("../images/search.png");
  background-size: cover;
  border: none;
}

/*----------
navigation 
----------*/

ul {
  list-style-type: none;
  margin: 0;
  padding: 0;
  overflow: hidden;
  background-color: #b39cd0;
  width: 100%;
}

li {
  float: left;
}

li:last-child {
  float: right;
}

li a {
  text-decoration: none;
  text-align: center;
  display: block;
  padding: 1em 1.5em;
  color: white;
}

.active {
  background-color: #845ec2;
  color: white;
}

li a:hover:not(.active) {
  background-color: #845ec2;
  color: #fbeaff;
}

.dropdown {
  float: inline-start;
  overflow: hidden;
  padding: 0.9em 1.5em;
}

.dropdown .dropbtn {
  border: none;
  outline: none;
  font-size: 1em;
  color: #fbeaff;
  background-color: #b39cd0;
}
.dropbtn:hover {
  color: white;
}

.dropdown-content {
  display: none;
  position: absolute;
  background-color: #b39cd0;
  max-width: 10em;
  right: 0em;
  top: 10.1em;
  z-index: 1;
}

.dropdown-content a {
  float: none;
  color: #fbeaff;
  padding: 1em 1.5em;
  text-decoration: none;
  display: block;
}

.dropdown-content a:hover {
  background-color: white;
}

.dropdown:hover .dropdown-content {
  display: block;
}

/*----------
for medium size
----------*/

@media screen and (max-width: 1200px) {
  .grid {
    float: none;
    display: block;
    text-align: left;
    display: grid;
    padding: 1rem;
    grid-template-columns: 1fr 1fr;
    gap: 2rem;
    align-items: center;
    margin: 0 auto;
  }
  .imgSize {
    max-width: 100%;
    height: 13em;
  }
  main {
    margin: auto;
    width: 95%;
    padding: 1em 1.5em;
  }
}

/*----------
for medium size
----------*/

@media screen and (max-width: 700px) {
  li,
  .grid {
    float: none;
    display: block;
    text-align: left;
  }
  .grid {
    float: none;
    display: block;
    text-align: left;
    display: grid;
    padding: 1rem;
    grid-template-columns: 1fr;
    gap: 2rem;
    align-items: center;
    margin: 0 auto;
  }
  .imgSize {
    max-width: 100%;
    height: 13.5em;
  }
  .dropbtn {
    margin: auto;
    width: 100%;
  }

  .dropdown-content {
    position: absolute;
    top: 7em;
    left: 0;
    float: left;
    z-index: 99;
  }

  main {
    margin: auto;
    width: 100%;
  }
  li:last-child {
    margin: auto;
    width: 100%;
  }

  .header-right {
    display: none;
  }

  header {
    display: flex;
    list-style: none;
    justify-content: space-around;
    margin: 0;
    padding: 0;
  }
}

#myBtn {
  display: none;
  bottom: 2.5em;
  right: 2em;
  z-index: 99;
  background-image: url("../images/up.png");
  background-color: transparent;
  cursor: pointer;
  background-size: cover;
  border: none;
  position: fixed;
  padding: 2em;
}

footer {
  bottom: 0;
  height: auto;
  width: 100%;
  background-color: #b39cd0;
  padding: 1em;
}
.footerNav {
  text-align: center;
  color: #f4f4f4;
}
.earth-title {
  color: #2ec42e;
}

img {
  width: 100%;
}