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

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

/* Style the top navigation bar */
.topnav {
  overflow: hidden;
  background-color: #990000;  
}

/* Style the topnav links */
.topnav a {
  float: left;
  display: block;
  color: #f2f2f2;
  text-align: center;
  padding: 14px 16px;
  text-decoration: none;
  margin-left: 15px;
}

/* Change color on hover */
.topnav a:hover {
  background-color: #ddd;
  color: black;
}

/* Style the content */
.content {
  background-color: #f1f1f1;
  padding: 10px;
  
}

/* Style the footer */
.footer {
  background-color: #dddddd;
  padding: 10px;
}

h1 {font-size: 24px; line-height: 1.5; margin:15px;}
h2, h3, h4 {font-size: 20px; line-height: 1.5; margin:15px;}
p, li {font-size:15px; margin:15px; line-height: 1.5;}

A { 
  text-decoration: none;		/* Подчеркивание убираем */
}
 A:hover {
  text-decoration: underline;	/* При наведении курсора подчеркивание появляется */
}

img { 
width: 90%; 
height: auto; 
max-width: 800;
object-fit: cover; 
object-position: bottom; 
}