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

/*Universal*/

h1, h2{
  text-align: center;
}

h1 {
  margin: 2vh 0 0 0 ;
  font-size: 2.5rem;
}

h2 {
  font-size: 1.75rem;
  padding: 2vh;
}

h3 {
  font-size: 1.5rem;
}

div {
 padding: 1vh 2.5vw;
}

header {
 display: flex;
 justify-content: space-between;
}

li {
  margin: 3vh 0;
}

header, #hero, .row-two {
  border-bottom: 1px black solid;
}

/*Classes*/

.card-container{
  display: flex;
  justify-content: center;
  padding: 2vh 3vh 5vh 3vh;
  gap:20px;
  flex: 1;
}

.hero-card{
  padding: 2vh 2vw;
  border: 1px solid black;
}

#hero p{
  text-align: center;
}

.flex-container {
    display: flex;
    justify-content: flex-start;
    gap: 20px;     /* Adds space between the boxes */
}

.col-one, .col-two {
    padding: 2vh 0 1vh 0;
    width: 50%;
    text-align: center;
    border: 1px solid black;
}

.card {
  padding: 2vh 1vw;
  border: 1px black solid;
  min-height: 400px; /* Optional: ensures a minimum height */
  /* Add a smooth transition for scaling */
  transition: transform 0.3s ease-in-out;
  margin: 1vh 0 2vh 0;
  width: 18vw;
}
.lesson-header p{
  text-align: center;
  margin: auto;
}

.lesson-contents{
  margin: 0 auto;
  width: 60%;
}

.lesson-contents iframe{
  margin: auto;
}

.lesson-contents h3{
  margin: 2vw auto
}

a {
  margin: 2vh auto;
  text-align: center;
  padding: 2vh 2vw; 
  border: 1px solid black;
  text-decoration: none;
  color: white;
  font-size: 20px;
  background-color: #F16E00;
  display: block;
  width: 25vw;
} 

.logo-container, .nav-container{
  width: 50%;
  padding: 0;
}

.nav-container{
  display: flex;
  justify-content: flex-end;
  align-items: center;
}

.nav-container a{
  margin: 0 1.25vw 0 0;
  padding: 10px 20px;
  text-align: center;
  border: 1px solid black;
  text-decoration: none;
  color: white;
  font-size: 20px;
  background-color: #F16E00;
}

.row-one h3 {
  text-align: center;
  padding: 0 0 2vh 0;
}

/*IDs*/

#header-logo {
  height: auto;
  width: 225px;
  margin-left: 1vw;
}

#hero {
  height: 33vh;
  flex-direction: column;
}