* {
  box-sizing: border-box;
}

body {
  font-family: Arial, Helvetica, sans-serif;
  margin: 0;
}

/* Style the header */
.header {
  padding: 40px;
  text-align: center;
  background: #1e90ff;
  color: white;
}

/* Increase the font size of the h1 element */
.header h1 {
  font-size: 40px;
}

/* Increase the font size of the h2 element */
.header h2{
 font-size: 15px;
 font-style: italic;
}	

/* Column container */
.row {  
  display: flex;
  flex-wrap: wrap;
}

/* Main column */
.main {   
  flex: 70%;
  background-color: #87ceea;
  padding: 20px;
}

.main h1{
 font-size: 25px;
 color: black;
 font-weight: bold;
}

.main h2{
 font-size: 17px;
 color: black;
 font-weight: bold; 
}

.main h3{
 font-size: 20px;
 color: black;
 font-weight: bold;
 text-decoration: underline; 
}

.main h4{
 font-size: 15px;
 color: red;
 font-style: italic;
 font-weight: bold;
}

.main h5{
 color: black;
 font-weight: bold;
 text-decoration: underline; 
 }

.responsive {
  max-width: 75%;
  height: auto;
}