body{
  font-family: Arial, Verdana, sans-serif;  
  background-color: #f3f4f6;
  color: #222;
  margin: 0;
  line-height: 1.5;}
header{ background-color: #e7ecff;
  padding: 1rem;
  border-bottom: 2px solid #c9d2ff;   }
h1{
   
  font-size: 2rem;
  font-weight: bold;
  text-align: center;
  text-shadow: 0.12rem 0.12rem 0.15rem #c7c7c7;
  margin: 0.5rem 0;
   
  }
h2{
  font-size: 1.3rem;
  margin-top: 1.2rem;
  text-transform: capitalize;   }

p{font-size: 1rem;
  margin: 0.6rem 0;}



main{
  background-color: #ffffff;
  width: 90%;
  max-width: 60rem;
  margin: 1rem auto;
  padding: 1rem;
  border: 1px solid #d6d6d6;}
ul{
  list-style-type: square;
  list-style-position: outside;}
ol{ list-style-type: upper-roman;
  list-style-position: inside;

  }
dl{
  border-left: 0.3rem solid #4f46e5;
 padding-left: 1rem;}

a{
 color: #1d4ed8;
  text-decoration: underline;
}



nav{
  background-color: #dbe4ff;
  padding: 0.6rem;
 margin-top: 0.7rem;
  border: 1px solid #c5d2ff;}
nav a{
  text-decoration: none;
  color: #111827;
  padding: 0.3rem 0.6rem;}
nav a:hover{background-color: #c7d2fe;}

.card{
  border: 1px solid #d6d6d6;
  padding: 1rem;
  margin: 1rem 0;}

.highlight{
  background-color: #fff7cc;
  padding: 0.2rem 0.3rem;
}
back-icon{
  width: 30px;}



#intro{
  border: 2px dashed #a5b4fc;
  padding: 1rem;}




#intro a{
  color: #0f766e;
  text-decoration: none;}

figure{margin: 0.8rem 0;}

img{
   width: 100%;
  max-width: 38rem;
   
  border: 1px solid #ccc;
}
footer{
  text-align: center;
  padding: 1rem;
color: #444;
  font-size: 0.95rem;}
@media (max-width: 35rem){
  h1{ font-size: 1.6rem; }
  main{ width: 94%; } }