body,h1,h2,h3,h4,h5{
	background:white;
	color: black;
    font: Roboto, Tahoma, sanserif;
	margin-left: 15px;
}

h1 {font-size: 2em;
	text-decoration: underline;
	}
h2 {font-size: 1.7em;
	text-decoration: underline;
	}
h3 {font-size: 1.6em;
	text-decoration: underline;
	}
h4 {font-size: 1.5em;}
h5 {font-size: 1.4em;}

p {	font-size: 1.2em;
	margin-left: 0;
	}

.video {
  width: 50%;  
  float: left;
  margin-right: 30px;
  border: 5px solid black;
}
.clearleft{
    clear: left;
}
.exercise {
	background: yellow;
}
a {
    color: BLUE;
	font-size: 1.2em;
}
a:hover {
    text-decoration: none;
}

ul,dl,li{
    list-style: none;
    margin-left: .5em;
    margin-right: .5em;
    margin-top: .5em;
    margin-bottom: .5em;
    padding-left: 1em;
	font-size: 1.2em;
    }