header{
background-color: #357B92;
text-align: center;
padding: 15px;
margin: 15px;
font-size: 30px;
}

h1 {
color: #99F0FE;
}

h1 {
cursor:pointer;
} 
h1:hover {
color:#FFFFFF;
}

section {
background-color: #83C1CB;
}

button {
cursor:pointer;
} 
button:hover {
background-color:#BFBFBF;
}